Siemens SIMATIC S7-1200 - 5.5.1 Inserting a memory card in the CPU

PLC concepts
5.5 Using a memory card
S7-1200 Programmable controller
System Manual, V4.2, 09/2016, A5E02486680-AK
139
5.5.1
Inserting a memory card in the CPU
NOTICE
Protect memory card and receptacle from electrostatic discharge
Electrostatic discharge can damage the memory card or the receptacle on the CPU.
Make contact with a grounded conductive pad and/or wear a grounded wrist strap when
you handle the memory card. Store the memory card in a conductive container.
Check that the memory card is not write
-protected. Slide the protection
switch away from the "Lock" position.
Note that if you do insert a write
-protected memory card into the CPU,
STEP
7 will display a diagnostic message on the next power up alerting you
to that fact. The CPU will power up without failure, but instructions involving
recipes or data logs, for example, will return errors if the card is write
-
protected.
WARNING
Verify that the CPU is not running a process before inserting the memory card.
If you insert a memory card (whether configured as a program card, transfer card, or
firmware update card) into a running CPU, the CPU goes immediately to STOP mode,
which might cause process disruption that could result in death or severe personal injury.
Before inserting or removing a memory card, always ensure that the CPU is not actively
controlling a machine or process. Always install an emergency stop circuit for your
application or process.
Note
Do not insert V3.0 program transfer cards into S7-1200 V4.0 CPUs.
Version 3.0 program transfer cards are not compatible with version S7
-1200 V4.0 CPUs.
Inserting a memory card that contains a V3.0 program causes a CPU error.
If you do insert an invalid version
program transfer card (Page 142), you should remove the
card, and perform a STOP to RUN transition, a memory reset (MRES), or cycle power. After
you recover the CPU from the error condition, you can downlo
ad a valid V4.0 CPU program.
To transfer a V3.0 program to a V4.0 program, you must use the TIA Portal to Change
Device in the Hardware Configuration.
Note
If you insert a memory card with the CPU in STOP mode, the diagnostic buffer displays a
message
that the memory card evaluation has been initiated. The CPU will evaluate the
memory card the next time you either change the CPU to RUN mode, reset the CPU
memory with an MRES, or power
-cycle the CPU.