Siemens Simatic S7 Series User Manual

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Available Expansion Most S7-200 expansion modules are designed to provide
additional I/O. However, several expansion modules are available
to support communication options, positioning, and weighing
(SIWAREX MS).
CPU 221 comes with 6 discrete inputs and 4 discrete outputs
and does not accept expansion modules.
CPU 222 comes with 8 discrete inputs and 6 discrete outputs
and accepts up to 2 expansion modules.
CPU 224, CPU 224XP, and CPU 224XPsi come with 14 discrete
inputs and 10 discrete outputs and accept up to 7 expansion
modules. Note: The digital outputs for the CPU 224XPsi are
current sinking.
CPU 226 comes with 24 discrete inputs and 16 discrete
outputs and accepts up to 7 expansion modules.
E xpan sion M odules
D is cre te In put 8 x 24 V DC 8 x 1 20/23 0 V AC 1 6 x 24 VD C
D is cre te O u tpu t 4 x 24 V DC 8 x 24 V D C 8 x 120/23 0 V AC 4 x R elay 8 x R elay
D is cre te C om bina tion
4 x A nalog 4 x T h erm o cou ple 2 x R T D
8 x A nalog 8 x T h erm o cou ple 4 x R T D
A nalog O utpu t 2 x A nalog 4 x A nalog
A nalog C om bination
C om m unic ation M o dule s M ode m AS -In terfa ce P RO FIB U S -D P E the rnet E the rnet IT
G S M /G P RS M ode m
O ther M od ules P ositio n S IW AR E X M S
16 x 24 V D C In/16 x R e lay
32 x 24 V D C In/32 x R e lay
4 x A nalog In/1x A nalog O u t
A nalog Inpu t
4 x 24 V DC In/4 x 24 V D C o ut
8 x 24 V DC In/8 x 24 V D C O ut
4 x 24 V DC In/4 x R elay
16 x 24 V D C In/16 x 24 V D C O ut
32 x 24 V D C In/32 x 24 V D C O
8 x 24 V DC In/8 x R elay
6 In puts, 4 O utp uts
N o E xp ans io n M odules (E M )
8 In puts, 6 O utp uts
U p to 2 E xpa nsion M od ules
14 Inpu ts, 1 0 O utpu ts
U p to 7 E xpa nsion M od ules
14 Inpu ts, 1 0 O utpu ts
2 A n alog In , 1 A nalog O ut
U p to 7 E xpa nsion M od ules
24 Inpu ts, 1 6 O utpu ts
U p to 7 E xpa nsion M od ules
C P U2 21
C P U2 22
C P U2 24
E M
E M
C P U2 26
E M
E M
E M
E M
E M
E M
C P U2 24X P
C P U2 24X P s i
E M
E M
E M
E M
E M
E M
E M
E M
E M
E M
E M
E M
E M
E M
E M
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Siemens Simatic S7 Series Specifications

General

CPU	Varies by model (e.g., S7-300, S7-400, S7-1200, S7-1500)
Communication Interfaces	PROFIBUS, PROFINET, Ethernet, MPI
Programming	TIA Portal, STEP 7
Programming Languages	LAD, FBD, STL, SCL, GRAPH
I/O Modules	Digital, Analog, Specialty modules available
Operating Temperature	0°C to 60°C (standard models)
Mounting	DIN rail mounting
Operating Voltage	24V DC or 120/230V AC (varies by model)
Protection Class	IP20 (standard models)
Memory	Varies depending on the S7 model. Includes work memory (RAM) for program execution, load memory (EEPROM or Flash) for program storage, and system memory for operating system functions. Memory sizes range from kilobytes to megabytes.