S7-1200 Modules - Siemens SIMATIC S7 System Manual

94BProduct overview

1.3 S7-1200 modules

1.3 S7-1200 modules
Table 1- 6 S7-1200 expansion modules
Type of module
The CPU supports one plug-in
expansion board:
A signal board (SB) provides

additional I/O for your CPU.
The SB connects on the front of
the CPU.
A communication board (CB)

allows you to add another
communication port to your
CPU.
Signal modules (SMs) add
additional functionality to the CPU.
SMs connect to the right side of the
CPU.
Digital I/O

Analog I/O

RTD and thermocouple

Communication modules (CMs)
and communications processors
(CPs) add communication options
to the CPU, such as for
PROFIBUS or RS232 / RS485
connectivity (for PtP, Modbus or
USS), or the AS-i master. A CP
provides capabilities for other types
of communication, such as to
connect the CPU over a GPRS
network.
The CPU supports up to 3 CMs

or CPs
Each CM or CP connects to the

left side of the CPU (or to the
left side of another CM or CP)
22
Description
①
Status LEDs on
the SB
②
Removable user
wiring connector
①
Status LEDs
②
Bus connector
③
Removable user
wiring connector
①
Status LEDs
②
Communication
connector
S7-1200 Programmable controller
System Manual, 11/2011, A5E02486680-05