General
2
CPUs
5
Digital expansion modules
19
Analog expansion modules
24
Communication modules
32
Power supplies
35
Human Machine Interface
36
SIMATIC Industrial Software
40
Configuring forms
46
Summary of ordering data
52
Appendix
56
s
The products and systems
described in this catalog are sold
under application of a quality
management system certified
by DQS in accordance with
DIN EN ISO 9001 (Certificate
registration No.: 1323-03).
The DQS Certificate is re-

•Highly integrated, space-
saving, powerful
•Can be used both for simple
controls and for complex
automation tasks
•In stand-alone mode, in
networks and within
distributed structures
•Suitable for applications
where programmable
controllers would not have
been viable in the past
•W ith outstanding real-time
performance and powerful
communication (PPI,
PROFIBUS-DP, AS-
Interface)
•Extremely simple
installation, programming
and operation
■
Application The SIMATIC
®
S7-200
®
is a
micro PLC for open-loop and
closed-loop control tasks in
mechanical engineering and
plant engineering. It

•Easy to learn, with special
starter packages and
manuals
•Uncomplicated operation;
powerful, easy-to-use
standard instructions and
user-friendly programming
software reduce
programming to a minimum
•Unequaled real-time
features; interrupt functions,
high-speed counters and
pulse outputs permit
application in time-critical
processes
•Powerful communication
capabilities; the integrated
PROFIBUS-DP interface in
particular enables the S7-
200 to maximize its
performance in distributed
automation solutions.
Micro PLC SIMATIC S7-200
September 2000 Extract from Siemens Catalog ST 70
3
SIMATIC S7-200
General
■
Design The SIMATIC S7-200 family
consists of the following

•Point-to-point interface; can
be operated in PPI, MPI
(slave) mode and in user-
programmable interface
mode
•AS-Interface connection; as
master via the CP 243-2
communication processor
•Connection to PROFIBUS-
DP as slave; via the
PROFIBUS-DP module
EM 277
PPI network
PPI is the communications
system integrated in every S7-
200 CPU. Connections for pro-
gramming or for human machi-
ne interface functionality can
be established over a shared
twisted-pair cable. The CPUs
can communicate with several
other CPUs, TDs or OPs
simultaneously
The data transfer rate is 9.6/
19.2/187.5 kbit/s. The
following can be connected:
•PG 720PII, PG 740PIII,
PC RI45 PIII Tower
programming devices
•PCs (AT-compatible), via PC/

or MPI card
S7-200
S7-200
S7-200
SIMATIC OP
TD 200
PPI network
SIMATIC OP
S7-400
S7-300
S7-200
MPI network
Progr. device/PC
PC via MPI card
4
SIMATIC S7-200
General
Micro PLC SIMATIC S7-200
September 2000 Extract from Siemens Catalog ST 70
■
Communication (cont.) Point-to-point interface,
user-programmable
interface mode
Connection to the RS 232
interface via PC/PPI cable.
Data transmission is
performed with the CPU in
FreePort mode; in the case of
the CPU 226, both ports can
be operated in FreePort

SIMATIC system components
while at the same time
maintaining an open system.
PROFIBUS-DP’s high data
transfer rate (up to 12 Mbit/s)
over the integrated interface
allows the real time features of
the S7-200 to be used to their
full extend within a distributed
system structure.
Response times in the millise-
cond range enable applica-
tions such as the following:
•Motor synchronization
•Interrupt-oriented applica-
tions
•Coordination of high-speed
counting processes
Fig. 3 Communication in user-programmable interface mode
Fig. 4 Communication via AS-Interface
Fig. 5 Communication via PROFIBUS-DP
S7-200
SONAR BERO
with int. AS-Interface
Inductive BERO
with int. AS-Interface
Operator panel
SIMATIC S7-300
0
1

expansion boards
■
CPU 224 •The compact high-perfor-
mance CPU
•W ith 24 inputs/outputs
on board
•Expandable with max. 7
expansion boards
■
CPU 226 •The powerful package for
large technical tasks
•W ith an additional communi-
cation interface for even
more flexibility and commu-
nication options
•W ith 40 inputs/outputs
on board
•Expandable with max. 7
expansion modules
Micro PLC SIMATIC S7-200
September 2000 Extract from Siemens Catalog ST 70
6
SIMATIC S7-200
CPU 221, CPU 222, CPU 224, CPU 226
CPUs
■
Application CPU 221
The smart compact solution,
with 10 inputs/outputs on
board, cannot be extended.

•2 device variants;
with different supply and
control voltages
•Integrated digital inputs/
outputs;
CPU 221:
6 inputs and 4 outputs;
CPU 222:
8 inputs and 6 outputs;
CPU 224:
14 inputs and 10 outputs;
CPU 226:
24 inputs and 16 outputs
•CPU 221/222/224:
1 communication interface;
CPU 226:
2 communication interfaces;
optionally
- as PPI interface with PPI
protocol for programming
functions, HMI
®
functions
(TD 200, OP), S7-200-
internal CPU/CPU
communication (9.6/19.2/
187.5 kbit/s) or as MPI
slave for data exchange
with MPI masters (S7-300/-
400, OPs, TDs, Push

down counters with two
separate inputs and for
connecting incremental
encoders wtih two pulse
sequences (20 kHz) with a
90° offset
•CPU 222/224/226:
Trouble-free expandability
through digital and analog
expansion modules (EM’s)
•Simulator (optional);
for the simulation of
integrated inputs and the
testing of user programs
•Analog potentiometers;
CPU 221/222:
1 analog potentiometers;
CPU 224/226:
2 analog potentiometers,
can be used as a user-
friendly setpoint adjuster
during everyday operation,
such as for setting timers
•Pulse outputs;
2 high-frequency pulse
outputs (max. 20 kHz); For
use in positioning tasks and
the control of frequency-
regulated motors and
stepper motors via power

inserted into the memory
submodule slot.
Micro PLC SIMATIC S7-200
September 2000 Extract from Siemens Catalog ST 70
7
SIMATIC S7-200
CPUs
CPU 221, CPU 222, CPU 224, CPU 226
■
Design (cont.)
Device versions
■
Functions •Extensive set of instructions;
A multiplicity of
- basic operations such as
binary logic operations,
result allocation, save,
count, create times, load,
transfer, compare, shift,
rotate, create complement,
call sub-program (with
local variables)
- integrated communication
commands (eg. S7-200
communication (Network
read NETR, Network write
NETW ) or Freeport
(Transmit XMT, Receive
RCV)) and
- enhanced functions such

triggered when a specified
value is reached or if the
counter direction changes
- Communication interrupts
allow the rapid and easy
exchange of information
with peripheral devices
such as printers or bar
code readers
•Direct interrogation and
control of inputs/outputs;
Inputs and outputs can also
be interrogated and set
independently of the cycle.
The controller can so react
quickly to process events
(e.g. direct resetting of
outputs when interrupt
occurs)
•Password protection; the
3-level password protection
concept safeguards effec-
tively your know-how. The
protection concept has the
following options for access
to the user program:
- Full access: The program
can be altered as desired.
- Read only: The program is
protected against unautho-

program.
•Runtime edit:
•During RUN mode,
programs can be edited and
modified programs can be
loaded into the CPU with a
mouse click without having
to interrupt the running
program
•Additional mathematical
functions, e.g. SIN, COS,
TAN, LN, EXP
CPU 224, CPU 226 in addi-
tion:
•Runtime edit:
During RUN mode, pro-
grams can be edited and
modified programs can be
loaded into the CPU with a
mouse click without having
to interrupt the running pro-
gram
•Additional mathematical
functions, e.g. SIN, COS,
TAN, LN, EXP
■
Programming The STEP
®
7-Micro/W IN32 V3
programming package

September 2000 Extract from Siemens Catalog ST 70
SIMATIC S7-200
CPU 221, CPU 222, CPU 224, CPU 226
CPUs
■
Technical specifications CPU 221
Program memory 4 kbytes
Data memory 2 kbytes
Memory cartridge (optional) 1 pluggable memory cartridge;
content identical to the inte-
grated EEPROM
Program backup entire program maintenance-free
in the integrated EEPROM
Data backup • entire DB 1 loaded from pro-
gramming device/PC into inte-
gral EEPROM; maintenance-free
• current DB 1 values in RAM, re-
tentive memory bits, timers,
counters etc. maintenance-free
through super capacitor;
optional battery for long-term
backup.
Backup time typ. 50 h (min. 8 h at 40 °C);
200 days (typ.) with optional bat-
tery module
Programming language LAD, FBD and STL
Program organization 1 OB, 1 DB, 1 SDB
Subroutines with/without parame-
ter passing
Program execution • free cycle (OB 1)

16 timers, 10 ms to 5 min
236 timers, 100 ms to 54 min
Integrated high speed functions
• Interrupt inputs 4 (4 rising edges and/or 4 falling
edges)
• Counters 4 fast counters (each with
30 kHz), 32 bits (incl. sign),
can be used as up/down
counters or for connecting 2
incremental encoders with pulse
trains offset by 90°;
(max. 20 kHz (A/B counter));
with parameterizable enable and
reset inputs;
Interrupt options (inc. calling a
subroutine with any content) on
reaching a specified value;
reversal of counting direction etc.
• Pulse outputs 2 high-speed outputs, 20 kHz,
with interrupt option; pulse width
and frequency modulation possi-
ble
Interfaces 1 RS 485 communication
interface, optionally:
• as PPI interface with PPI
protocol for programming
functions, HMI functions
(TD 200, OP), S7-200-internal
CPU/CPU communication; Baud
rates 9.6/19.2/187.5 kbit/s

• Analog inputs/outputs -
• AS-Interface inputs/outputs, max. -
Expansion, max. -
Degree of protection IP 20 in accordance with IEC 529
Ambient temperature
• with horizontal installation 0 to 55 °C
• when mounted vertically 0 to 45 °C
Relative humidity 5 to 95% (RH severity level 2 in
accordance with IEC 1131-2)
Atmospheric pressure 860 to 1080 hPa
Other environmental conditions see “S7-200 Programmable
Controller, system manual”
9
Micro PLC SIMATIC S7-200
September 2000 Extract from Siemens Catalog ST 70
SIMATIC S7-200
CPUs
CPU 221, CPU 222, CPU 224, CPU 226
■
Technical specifications CPU 221 (cont.)
Power supply: 24 V DC 100 to 230 V AC
Inputs:
24 V DC 24 V DC
Outputs:
24 V DC Relay
Supply voltage L+/L1
• rated value 24 V DC 100 to 230 V AC
• permitted range 20.4 to 28.8 V 85 to 264 V AC
(47 to 63 Hz)
Input current

Galvanic isolation Optocoupler Optocoupler
• in groups of 2 and 4 2 and 4
Input current
• rated value for "1" signal 4 mA 4 mA
Input delay (at rated value of
the input voltage)
• for standard inputs max. every
0.2 to 12.8 ms,
selectable
every
0.2 to 12.8 ms,
selectable
• for interrupt inputs (I0.0 to I0.3)
0.2 to 12.8 ms,
selectable
(I0.0 to I0.3)
0.2 to 12.8 ms,
selectable
• for fast counters max. (I0.0 to I0.5)
30 kHz
(I0.0 to I0.5)
30 kHz
Connection of 2-wire BERO
• Permissible quiescent cur-
rent, max.
1 mA 1 mA
Cable lengths
• unshielded (not for high-
speed signals)
300 m 300 m

• for "0" signal 0.1 mA 0 mA
Sum of all output currents
• at 40 °C, max. 3.0 A 6.0 A
• at 55 °C, max. (horizontal in-
stallation)
3.0 A 6.0 A
ON delay
• of the standard outputs,
max.
(O0.2 to O0.3)
15 µs
(all outputs)
10 ms
• of the pulse outputs, max. (O0.0 to O0.1)
2 µs
-
OFF delay
• of the standard outputs, max. (O0.2 to O0.3)
100 µs
(all outputs)
10 ms
• of the pulse outputs, max. (O0.0 to O0.1)
10 µs
-
Operating frequency of the
pulse outputs
(O0.0 to O0.1) (O0.0 to O0.1)
• for resistive load 20 kHz -
Switching capacity of the out-
puts

Program memory 4 kbytes
Data memory 2 kbytes
Memory cartridge (optional) 1 pluggable memory cartridge;
content identical to the inte-
grated EEPROM
Program backup Entire program maintenance-free
in the integrated EEPROM
Data backup • Entire DB 1 loaded from pro-
gramming device/PC into inte-
gral EEPROM; maintenance-free
• Current DB 1 values in RAM, re-
tentive flags, timers, counters
etc. maintenance-free through
super capacitor; optional battery
for long-term backup
Backup time typ. 50 h (min. 8 h at 40 °C);
200 days (typ.) with optional bat-
tery module
Programming language LAD, FBD and STL
Program organization 1 OB, 1 DB, 1 SDB
Subroutines with/without parame-
ter passing
Program execution • free cycle (OB 1)
• interrupt-controlled
• time controlled (1 to 255 ms)
Subroutine levels 8
User program protection 3-level password protection
Operation set Bit logic operations, comparison
operations, timer operations,
counting operations, clock opera-

can be used as up/down
counters or for connecting 2
incremental encoders with pulse
trains offset by 90°;
(max. 20 kHz (A/B-Counter));
with parameterizable enable and
reset inputs;
Interrupt options (inc. calling a
subroutine with any content) on
reaching a specified value;
Reversal of counting direction
etc.
• Pulse outputs 2 high-speed outputs, 20 kHz,
with interrupt option; pulse width
and frequency modulation possi-
ble
Interfaces 1 RS 485 communication
interface, optionally:
• as PPI interface with PPI
protocol for programming
functions, HMI functions (TD
200, OP), S7-200-internal CPU/
CPU communication; Baud
rates 9.6/19.2/187.5 kbit/s
• or as MPI slave for data
exchange with MPI masters (S7-
300/S7-400 CPU’s, OP’s, TDs,
push-button panels); S7-200-
internal CPU/CPU
communication is not possible in

• AS interface inputs/outputs, max. max. 31 AS-Interface slaves
(CP 243-2)
Expansion, max. 2 expansion modules
1)
Degree of protection IP 20 in accordance with IEC 529
Ambient temperature
• with horizontal installation 0 to 55 °C
• when mounted vertically 0 to 45 °C
1) Only S7-22x series expansion modules can be used. Because of the limited output current, the use of expansion boards can be subject to
restrictions.
11
Micro PLC SIMATIC S7-200
September 2000 Extract from Siemens Catalog ST 70
SIMATIC S7-200
CPUs
CPU 221, CPU 222, CPU 224, CPU 226
■
Technical specifications CPU 222 (cont.)
Relative humidity 5 to 95% (RH severity level 2 in accor-
dance with IEC 1131-2)
Atmospheric pressure 860 to 1080 hPa
Other environmental
conditions
see “S7-200 Programmable Controller,
system manual”
Power supply:
24 V DC 100 to 230 V AC
Inputs:
24 V DC 24 V DC
Outputs:

high and active
low per group
Input voltage
• rated value 24 V DC 24 V DC
• for "1" signal 15 V 15 V
• for "0" signal 0 to 5 V 0 to 5 V
Galvanic isolation Optocoupler Optocoupler
• in groups of 4 4
Input current
• rated value for "1" signal 4 mA 4 mA
Input delay (at rated value of
the input voltage)
• for standard inputs every
0.2 to 12.8 ms
(selectable)
every
0.2 to 12.8 ms
(selectable)
• for interrupt inputs (I0.0 to I0.3)
0.2 to 12.8 ms
(selectable)
(I0.0 to I0.3)
0.2 to 12.8 ms
(selectable)
• for high-speed counters,
max.
(I0.0 to I0.5)
30 kHz
(I0.0 to I0.5)
30 kHz

• for "1" signal, min. DC 20 V L+/L1
Galvanic isolation Optocoupler Relay
• in groups of 6 3
Output current max.
• for "1" signal
- rated value at 40 °C 0.75 A 2 A
- rated value at 55 °C 0.75 A 2 A
• min. current - -
• for "0" signal 10 µA0 mA
Sum of all output currents
(horizontal installation)
• at 40 °C, max. 4.5 A 6.0 A
• at 55 °C, max.
(horizontal installation)
4.5 A 6.0 A
ON delay
• of the standard outputs, max. (O0.2 to O0.5)
15 µs
(all outputs)
10 ms
• of the pulse outputs, max. (O0.0 to O0.1)
2 µs
-
OFF delay
• of the standard outputs, max. (O0.2 to O0.5)
100 µs
(all outputs)
10 ms
• of the pulse outputs, max. (O0.0 to O0.1)
10 µs

Micro PLC SIMATIC S7-200
September 2000 Extract from Siemens Catalog ST 70
SIMATIC S7-200
CPU 221, CPU 222, CPU 224, CPU 226
CPUs
■
Technical specifications CPU 224
Program memory 8 kbytes
Data memory 5 kbytes
Memory cartridge (optional) 1 pluggable memory cartridge; content
identical to the integrated EEPROM
Program backup Entire program maintenance-free in the
integrated EEPROM
Data backup • Entire DB 1 loaded from programming
device/PC into integral EEPROM;
maintenance-free
• Current DB 1 values in RAM, retentive
flags, timers, counters etc. mainte-
nance-free through super capacitor;
optional battery for long-term backup
Backup time 190 h (min.120 h at 40 °C);
200 days (typ.) with optional battery
module
Programming language LAD, FBD and STL
Program organization 1 OB, 1 DB, 1 SDB
Subroutines with/without parameter
passing
Program execution • free cycle (OB 1)
• interrupt-controlled
• time controlled (1 to 255 ms)

Integrated high-speed
functions
• Interrupt inputs 4 (4 rising edges and/or
4 falling edges)
• Counter 6 fast counters (each with 30 kHz),
32 bits (incl. sign), can be used as up/
down counters or for connecting 2
incremental encoders with pulse trains
offset by 90°; (max. 20 kHz (A/B
counter)); with parameterizable enable
and reset inputs;
Interrupt options (inc. calling a
subroutine with any content) on
reaching a specified value;
Reversal of counting direction etc.
• Pulse outputs 2 high-speed outputs, 20 kHz, with
interrupt option; pulse width and fre-
quency modulation possible
Interfaces 1 RS 485 communication interface,
optionally:
• as PPI interface with PPI protocol for
programming functions, HMI
functions (TD 200, OP), S7-200-
internal CPU/CPU communication;
Baud rates 9.6/19.2/187.5 kbit/s
• or as MPI slave for data exchange
with MPI masters (S7-300/S7-400
CPU’s, OP’s, TDs, push-button
panels); S7-200-internal CPU/CPU
communication is not possible in the

max. 31 AS-Interface slaves
(CP 243-2)
Expansion, max. 7 expansion modules
1)
Only expansion modules from the
S7-22x series may be used
Degree of protection IP 20 in accordance with IEC 529
Ambient temperature
• with horizontal installation 0 to 55 °C
• when mounted vertically 0 to 45 °C
Relative humidity 5 to 95% (RH severity level 2 in accor-
dance with IEC 1131-2)
Atmospheric pressure 860 to 1080 hPa
Other environmental condi-
tions
see “S7-200 Programmable
Controller, system manual”
1) Only S7-22x series expansion modules can be used. Because of the limited output current, the use of expansion boards can be subject to
restrictions.
13
Micro PLC SIMATIC S7-200
September 2000 Extract from Siemens Catalog ST 70
SIMATIC S7-200
CPUs
CPU 221, CPU 222, CPU 224, CPU 226
■
Technical specifications CPU 224 (cont.)
Power supply: 24 V DC 100 to 230 V AC
Inputs:
24 V DC 24 V DC

optionally active
high and active
low per group
Input voltage
• rated value 24 V DC 24 V DC
• for "1" signal , min. 15 V 15 V
• for "0" signal 0 to 5 V 0 to 5 V
Galvanic isolation Optocoupler Optocoupler
• in groups of 6 and 8 6 and 8
Input current
• rated value for "1" signal 4 mA 4 mA
Input delay (at rated value of
the input voltage)
• for standard inputs every
0.2 to 12.8 ms
(selectable)
every
0.2 to 12.8 ms
(selectable)
• for interrupt inputs (I0.0 to I0.3)
0.2 to 12.8 ms
(selectable)
(I0.0 to I0.3)
0.2 to 12.8 ms
(selectable)
• for fast counters max. (I0.0 to I1.5)
30 kHz
(I0.0 to I1.5)
30 kHz
Connection of 2-wire BERO

Galvanic isolation Optocoupler Relay
• in groups of 5 and 5 3. 3 and 4
Output current max.
• for "1" signal
- rated value at 40 °C 0.75 A 2 A
- rated value at 55 °C 0.75 A 2 A
- min. current - -
• for "0" signal 10 µA0 mA
Sum of all output currents
(horizontal installation)
• at 40 °C, max. 3.75 A 8.0 A
• at 55 °C, max. 3.75 A 8.0 A
ON delay
• of the standard outputs, max. (O0.2 to O1.1)
15µs
(all outputs)
10 ms
• of the pulse outputs, max. (O0.0 to O0.1)
2 µs
-
OFF delay
• of the standard outputs, max. (O0.2 to O1.1)
100µs
(all outputs)
10 ms
• of the pulse outputs, max. (A0.0 to A0.1)
10 µs
-
Operating frequency of the
pulse outputs

CPU 221, CPU 222, CPU 224, CPU 226
CPUs
■
Technical specifications CPU 226
Program memory 8 kbytes
Data memory 5 kbytes
Memory cartridge (optional) 1 pluggable memory cartridge;
content identical to the integrated
EEPROM
Program backup Entire program maintenance-free in the
integrated EEPROM
Data backup • Entire DB 1 loaded from programming
device/PC into integral EEPROM;
maintenance-free
• Current DB 1 values in RAM, retentive
memory bits, timers, counters etc.
maintenance-free through super ca-
pacitor; optional battery for long-term
backup.
Backup time 190 h (min. 120 h at 40 °C);
200 days (typ.) with optional battery
module
Programming language LAD, FBD and STL
Program organization 1 OB, 1 DB, 1 SDB
Subroutines with/without parameter
passing
Program execution • free cycle (OB 1)
• interrupt-controlled
• time controlled (1 to 255 ms)
Subroutine levels 8

functions
• Interrupt inputs 4 (4 rising edges and/or
4 falling edges)
• Counters 6 fast counters (each with 30 kHz),
32 bits (incl. sign), can be used as up/
down counters or for connecting 2
incremental encoders with pulse trains
offset by 90°; (max. 20 kHz (A/B-
Counter)); with parameterizable enable
and reset inputs;
Interrupt options (inc. calling a
subroutine with any content) on
reaching a specified value;
Reversal of counting direction etc.
• Pulse outputs 2 high-speed outputs, 20 kHz, with
interrupt option; pulse width and fre-
quency modulation possible
Interfaces 2 RS 485 communication interfaces,
optionally:
• as PPI interface with PPI protocol for
programming functions, HMI
functions (TD 200, OP), S7-200-
internal CPU/CPU communication;
Baud rates 9.6/19.2/187.5 kbit/s
• or as MPI slave for data exchange
with MPI masters (S7-300/S7-400
CPU’s, OP’s, TDs, push-button
panels); S7-200-internal CPU/CPU
communication is not possible in the
MPI network;

inputs/outputs, max.
31 AS-Interface slaves (CP 243-2)
Expansion, max. 7 expansion modules
1)
)
Degree of protection IP 20 in accordance with IEC 529
Ambient temperature
• with horizontal installation 0 to 55 °C
• when mounted vertically 0 to 45 °C
Relative humidity 5 to 95% (RH severity level 2 in accor-
dance with IEC 1131-2)
Atmospheric pressure 860 to 1080 hPa
Other environmental
conditions
see “S7-200 Programmable
Controller, system manual”
1) Only S7-22x series expansion modules can be used. Because of the limited output current, the use of expansion boards can be subject to
restrictions.
15
Micro PLC SIMATIC S7-200
September 2000 Extract from Siemens Catalog ST 70
SIMATIC S7-200
CPUs
CPU 221, CPU 222, CPU 224, CPU 226
■
Technical specifications CPU 226 (cont.)
Power supply: 24 V DC 100 to 230 V AC
Inputs:
24 V DC 24 V DC
Outputs:

high and active
low per group
Input voltage
• rated value 24 V DC 24 V DC
• for "1" signal , min. 15 V 15 V
• for "0" signal 0 to 5 V 0 to 5 V
Galvanic isolation Optocoupler Optocoupler
• in groups of 13 and 11 13 and 11
Input current
• rated value for "1" signal 4 mA 4 mA
Input delay (at rated value of
input voltage)
• for standard inputs every
0.2 to 12.8 ms
(selectable)
every
0.2 to 12.8 ms
(selectable)
• for interrupt inputs (I0.0 to I0.3)
0.2 to 12.8 ms
(selectable)
(I0.0 to I0.3)
0.2 to 12.8 ms
(selectable)
• for fast counters max. (I0.0 to I1.5)
30 kHz
(I0.0 to I1.5)
30 kHz
Connection of 2-wire BERO
• Permissible quiescent

• in groups of 8 and 8 4, 5 and 7
Output current max.
• for "1" signal
- rated value at 40 °C 0.75 A 2 A
- rated value at 55 °C 0.75 A 2 A
- min. current - -
• for "0" signal 10 µA0 mA
Sum of all output currents
(horizontal installation)
• at 40 °C, max. 6.0 A 10.0 A
• at 55 °C, max. 6.0 A 10.0 A
ON delay
• of the standard outputs, max. (O0.2 to O1.1)
15 µs
(all outputs) 10 ms
• of the pulse outputs, max. (O0.0 to O0.1)
2 µs
-
OFF delay
• of the standard outputs, max. (O0.2 to O1.1)
100 µs
(all outputs) 10 ms
• of the pulse outputs, max. (O0.0 to O0.1)
10 µs
-
Operating frequency of the
pulse outputs
(O0.0 to O0.1) (O0.0 to O0.1)
• for resistive load 20 kHz -
Switching capacity of the

Technical specifications (cont.)
M L+ 0.0 0.1 0.2 0.3 M L+
1M 0.0 0.1 0.2 0.3 2M 0.4 0.5 M L+
CPU 221 24 V DC/24 V DC/24 V DC
4 outputs (24 V DC)
Power supply (24 V DC)
6ES7 211-0AA21-0XB0
6 inputs (24 V DC)

Power supply
(24 V DC) for
sensors or
expansion modules
(180 mA)
1M 0.0 0.1 0.2 0.3 2M 0.4 0.5 0.6 0.7 M L+
CPU 222 24 V DC/24 V DC/24 V DC
6 outputs (24 V DC)
6ES7 212-1AB21-0XB0
8 inputs (24 V DC)

Power supply
(24 V DC) for
sensors or
expansion modules
(180 mA)
Power supply
(24 V DC)
M L+ 0.0 0.1 0.2 0.3 0.4 0.5 M L+
CPU 224 24 V DC/24 V DC/24 V DC
10 outputs (24 V DC)

Power supply
(100 - 230V AC)
6ES7 212-1BB21-0XB0
8 inputs (24 V DC)
1M 0.0 0.1 0.2 0.3 2M 0.4 0.5 0.6 0.7 M L+

Power supply
(24 V DC) for
sensors or
expansion modules
(180 mA)
CPU 224 100 - 230 V AC/24 V DC/relay
6ES7 214-1BD21-0XB0
Power supply
(24 V DC) for
sensors or
expansion modules
(280 mA)
14 inputs (24 V DC)
10 outputs (24 V DC/24 - 230 V AC)
Power supply
(100 - 230 V AC)
1M 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 2M1.0 1.1 1.2 1.3 1.4 1.5 M L+
1L 0.0 0.1 0.2 0.3 2L 0.4 0.5 0.6 3L 0.7 1.0 1.1 N L1
Micro PLC SIMATIC S7-200
September 2000 Extract from Siemens Catalog ST 70
17
SIMATIC S7-200
CPUs
CPU 221, CPU 222, CPU 224, CPU 226

(100 - 230 V AC)
18
Micro PLC SIMATIC S7-200
September 2000 Extract from Siemens Catalog ST 70
SIMATIC S7-200
CPU 221, CPU 222, CPU 224, CPU 226
CPUs
■
Ordering data
CPU 221
24 V DC supply,
24 V DC inputs,
24 V DC outputs
6ES7 211-0AA21-0XB0
100-230 V AC supply,
24 V DC inputs,
relay outputs
6ES7 211-0BA21-0XB0
CPU 222
24 V DC supply,
24 V DC inputs,
24 V DC outputs
6ES7 212-1AB21-0XB0
100-230 V AC supply,
24 V DC inputs,
relay outputs
6ES7 212-1BB21-0XB0
CPU 224
24 V DC supply,
24 V DC inputs,

6ES7 274-1XK00-0XA0
Terminal block for
field levelwiring (optional)
12-pin, for CPU 221/212/222,
10 ea.
6ES7 290-2AA00-0XA0
Pluggable terminal block
(spare part)
with 7 interfaces (for CPU 22x) 6ES7 292-1AD20-0AA0
with 12 interfaces (for CPU 22x)
6ES7 292-1AE20-0AA0
with 14 interfaces (for CPU 22x)
6ES7 292-1AF20-0AA0
with 18 interfaces (for CPU 22x)
6ES7 292-1AG20-0AA0
PC-to-PPI cable 6ES7 901-3BF20-0XA0
5 m; with integral
RS 232C/RS 485 adapter,
between S7-200 and PC or data
terminal equipment such as print-
ers, bar-code readers;
Galvanic isolation by optocou-
plers
MPI cable 6ES7 901-0BF00-0AA0
5 m;
for connecting the S7-200 to MPI
Bus backplane extension cable
for interconnection of the two
rows of devices with double-row
configuration

with 35° cable outlet
• without PG interface 6ES7 972-0BA40-0XA0
• with PG interface
6ES7 972-0BB40-0XA0
PROFIBUS-FC Standard Cable
6XV1 830-0EH10
for connection to PPI;
standard type with special design
for quick mounting, 2-core,
shielded, by the meter
delivery unit max. 1000 m,
minimum order quantity 20 m
Repeater RS 485 for PROFIBUS 6ES7 972-0AA01-0XA0
CP 5511
see page 45
CP 5611
see page 45
19
Micro PLC SIMATIC S7-200
September 2000 Extract from Siemens Catalog ST 70
SIMATIC S7-200
Digital expansion modules
EM 221, EM 222, EM 223
SIMATIC S7-200
■
Overview •Digital input/outputs to sup-
plement the on-board I/O of
the CPUs
•For flexible adaptation of the
controller to the task

ries can only be expanded us-
ing expansion modules of the
S7-21x series. CPUs of the
S7-22x series (CPU 222/224/
226) can only be expanded
using expansion modules of
the S7-22x series. Combined
use of the various series is not
possible.
■
Design The expansion modules have
the same design features as
the basic units.
• Assembly on a standard DIN
rail;
the modules are snapped
onto the rail to the right of the
CPU and are connected to
each other and to the CPU
by means of flexible integrat-
ed ribbon cables.
•Direct panel-mounting:
Integrated holes also permit
direct attachment to the pan-
els. This method is recom-
mended for applications
subject to vibration.
20
Micro PLC SIMATIC S7-200
September 2000 Extract from Siemens Catalog ST 70

• from backplane bus (5 V DC) 30 mA
• from sensor power supply or exter-
nal power supply (24 V DC)
-
Power loss typ. 2 W
Dimensions (W x H x D) in mm 46 x 80 x 62
W eight 150 g
DC Relay
Connectable to S7-22x series S7-22x series
Plug-in I/O terminals Yes Yes
Number of inputs 8 8
Rated load voltage L+/L1 24 V DC 24 V DC
24 to 230 V AC
• permitted range 20.4 to 28.8 V DC 5 to 30 V DC
5 to 250 V AC
Output voltage
• for "1" signal min. 20 V -
Galvanic isolation Optocoupler Relay
• in groups of 4 4
Output current max.
• for "1" signal
- rated value at 40 °C 0.75 A 2.0 A
- rated value at 55 °C 0.75 A 2.0 A
- min. current - -
• for "0" signal 10 µA0 mA
Sum of all output currents
• at 40 °C 3.0 A 8.0 A
• at 55 °C
(horizontal installation)
3.0 A 8.0 A

• from sensor power supply or
external power supply (24 V
DC)
- 72 mA
(9 mA per
switched output)
Power loss, typ. 2 W 2 W
Dimensions (W x H x D) in mm 45 x 80 x 62 45 x 80 x 62
W eight 150 g 170 g
21
Micro PLC SIMATIC S7-200
September 2000 Extract from Siemens Catalog ST 70
SIMATIC S7-200
Digital expansion modules
EM 221, EM 222, EM 223
■
Technical specifications EM 223 digital input/output modules
1) 1 output up to 40 °C
4I/4O
8I/8O 16I/16O 4I/4O 8I/8O 16I/16O
Inputs: 24 V DC 24 V DC 24 V DC 24 V DC 24 V DC 24 V DC
Outputs: 24 V DC 24 V DC 24 V DC Relay Relay Relay
Connectable to CPU 22x CPU 22x CPU 22x CPU 22x CPU 22x CPU 22x
Plug-in I/O terminals Yes Yes Yes Yes Yes Yes
Inputs 48164816
Input voltage
• rated value 24 V DC 24 V DC 24 V DC 24 V DC 24 V DC 24 V DC
• for “1“ signal 15 to 30 V DC 15 to 30 V DC 15 to 30 V DC 15 to 30 V DC 15 to 30 V DC 15 to 30 V DC
• for “0“ signal 0 to 5 V 0 to 5 V 0 to 5 V 0 to 5 V 0 to 5 V 0 to 5 V
Galvanic isolation Optocoupler Optocoupler Optocoupler Optocoupler Optocoupler Optocoupler

• for “1“ signal 0.75 A 0.75 A 0.75 A 2 A 2 A 2 A
-min. current
Maximum current per
conductor/group
3 A3 A3/3/6 A8 A8 A8 A
Contact rating
1)
•for resistive load
•for inductive load
• for a lamp load 5 W 5 W 5 W 30/200 W
(DC/AC)
30/200 W
(DC/AC)
30/200 W
(DC/AC)
Service life of the contacts
(number of switching cycles)
to VDE 0660, Part 200
• mechanical - - - 10 mill. 10 mill. 10 mill.
• at rated load - - - 100.000 100.000 100.000
Inductive current interruption
voltage (internal) limited to
L+ - 48 V L+ - 48 V L+ - 48 V - - -
General
Short-circuit protection No No No provide
externally
provide
externally
provide
externally

with “1“ signal
9 mA per output
with “1“ signal
Power loss typ. 2 W 3 W 6 W 2 W 3 W 6 W
Dimensions (W x H x D)
in mm
46 x 80 x 62 71.2 x 80 x 62 137.5 x 80 x 62 46 x 80 x 62 71.2 x 80 x 62 137.5 x 80 x 62
W eight approx. 160 g 200 g 360 g 160 g 300 g 400 g
DC (for CPU 22x)
6ES7 222-1BF20-0XA0
8 outputs (24 V DC)
2M 2L+0.4 0.5 0.6 0.7
1M 1L+ 0.0 0.1 0.2 0.3
DC (for CPU 22x)
6ES7 221-1BF20-0XA0
8 inputs (24 V DC)
2M 0.4 0.5 0.6 0.7
1M 0.0 0.1 0.2 0.3
DC (for CPU 22x)
6ES7 223-1BH21-0XA0
8 inputs (24 V DC)
8 outputs (24 V DC)
1M 1L+ 0.0 0.1 0.2 0.3 2M 2L+0.4 0.5 0.6 0.7
1M 0.0 0.1 0.2 0.3 2M 0.4 0.5 0.6 0.7
Relay (for CPU 22x)
6ES7 223-1PH21-0XA0
8 inputs 24 V DC
8 outputs 24 V DC/24 to 230 V AC
M L+ 1M 0.0 0.1 0.2 0.3 2M 0.4 0.5 0.6 0.7
1L 0.0 0.1 0.2 0.3 2L 0.4 0.5 0.6 0.7

module
for CPU 222/224/226
• 4 inputs, 24 V DC,
4 outputs, 24 V DC
6ES7 223-1BF20-0XA0
• 8 inputs, 24 V DC,
8 outputs, 24 V DC
6ES7 223-1BH21-0XA0
• 16 inputs, 24 V DC,
16 outputs, 24 V DC
6ES7 223-1BL21-0XA0
EM 223 digital input/output
modules (continued)
• 4 inputs, 24 V DC,
4 outputs, relay
6ES7 223-1HF20-0XA0
• 8 inputs, 24 V DC,
8 outputs, relay
6ES7 223-1PH21-0XA0
• 16 inputs, 24 V DC,
16 outputs, relay
6ES7 223-1PL21-0XA0
Front flap set
contains various covering flaps
for CPUs and EMs;
spare part
6ES7 291-3AX20-0XA0
Pluggable terminal block
(spare part)
• with 7 interfaces

L (+)
2L 0.4 0.5 0.6 0.7
3L 0.0 0.1 0.2 0.3
4L 0.4 0.5 0.6 0.37
1L 0.0 0.1 0.2 0.3
1M 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7
24
SIMATIC S7-200
EM 231, EM 232, EM 235
Analog expansion modules
Micro PLC SIMATIC S7-200
September 2000 Extract from Siemens Catalog ST 70
■
Overview •Analog inputs and outputs
for the SIMATIC S7-200
•W ith extremely short conver-
sion times
•For connections of analog
sensors and actuators with-
out additional amplifier
•For performing even com-
plex automation tasks
■
Application Analog expansion modules
provide a means of using
analog input/output modules.
Advantages for the user in-
clude the following:
•Optimum adaptation;
using analog and digital ex-

Design The expansion modules have
the same design features as
the basic units.
• Assembly on a standard DIN
rail;
the modules are snapped
onto the rail to the right of the
CPU and are connected to
each other and to the CPU
by means of flexible integrat-
ed ribbon cables.
•Direct wall mounting;
integrated mounting holes
also facilitate direct screw
attachment to walls. This
mounting method is recom-
mended for applications
subject to high vibration lev-
els.
25
Micro PLC SIMATIC S7-200
September 2000 Extract from Siemens Catalog ST 70
SIMATIC S7-200
Analog expansion modules
EM 231, EM 232, EM 235
■
Technical specifications EM 231 analog input modules
■
Technical specifications EM 232 analog output modules
Connectable to S7-22x series

Current consumption
• from backplane bus (DC 5 V) 20 mA
• from sensor power supply or exter-
nal power supply (24 V DC)
60 mA
Power loss typ. 2 W
Dimensions (W x H x D) in mm 71.2 x 80 x 62
W eight 183 g
Connectable to S7-22x series
Plug-in I/O terminals Yes
Outputs 2
Output ranges
• voltage outputs -10 to +10 V
• current outputs 4 to 20 mA
Load resistor
• for voltage outputs min. 5 kΩ
• for current outputs max. 0.5 kΩ
Galvanic isolation No
Resolution
• for voltage output 12 bits
• for current output 11 bits
Settling time
• for voltage output 100 µs
• for current output 2 ms
Displayable range of conversion
values
• unipolar signals 0 to 32.000
• bipolar signals -32.000 to +32.000
Operating error limit
(0 to 55 °C referred to output range)