Siemens S7-300 appendix Slot for the Simatic Micro Memory Card MMC

Operating and display elements

2.1 Operating and display elements: CPU 31xC

The figure below illustrates the integrated digital and analog I/Os of the CPU with open front covers.

		X11		X12
SF
BF
DC5V
FRCE
RUN
STOP
RUN	1	2	2	3
STOP
MRES
	1		2	3

Figure 2-1 Integrated I/Os of CPU 31xC (CPU 314C-2 PtP, for example)

The figure shows	the following integrated I/Os
(1)	Analog I/Os
(2)	each with 8 digital inputs
(3)	each with 8 digital outputs

Slot for the SIMATIC Micro Memory Card (MMC)

A SIMATIC micro memory card (MMC) is used as memory module. You can use MMCs as load memory and as portable storage medium.

Note

These CPUs do not have an integrated load memory and thus require an MMC for operation.

2-2	CPU 31xC and CPU 31x, Technical data
	Manual, Edition 08/2004, A5E00105475-05