User Manual

Introducing the powerful and flexible S7-1200
1.3 S7-1200 modules
Easy Book
Manual, 03/2014, A5E02486774-AF
21
1.3
S7-1200 modules
Table 1- 8 S7-1200 expansion modules
Type of module
Description
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.
•
A battery board (BB) allows you
to provide long term backup of
the realtime clock.
①
Status LEDs on
the SB
②
Removable user
wiring connector
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
• SM 1278 IO-Link Master
①
Status LEDs
②
Bus connector
slide tab
③
Removable user
wiring connector
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
prov
ides 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)
①
Status LEDs
②
Communication
connector