Introducing the flexible and powerful S7-1200
1.1 Expanding the capability of the CPU
Easy Book
Manual, 05/2009, A5E02486774-01
9
1.1 Expanding the capability of the CPU
The S7-1200 family provides a variety of signal modules and signal boards for expanding the
capabilities of the CPU. You can also install additional communication modules to support
other communication protocols. For detailed information about a specific module, see the
technical specifications (Page 97).
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① Communication module (CM) ③ Signal board (SB)
② CPU ④ Signal module (SM)
Module Input only Output only Combination in/out
8 x DC In 8 x DC Out
8 x Relay Out
8 x DC In/8 x DC Out
8 x DC In/8 x Relay Out
Digital
16 x DC In 16 x DC Out
16 x Relay Out
16 x DC In/16 x DC Out
16 x DC In/16 x Relay Out
Signal module
(SM)
Analog 4 x Analog In 2 x Analog Out 4 x Analog In/2 x Analog Out
Digital - - 2 x DC In/2 x DC Out Signal board
(SB)
Analog - 1 x Analog Out -
Communication module (CM)
• RS485
• RS232
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