Festo MPS - Loading the PLC Program

6. Commissioning
96
© Festo Didactic 655633
6.10.1 Siemens controller
• Controller: Siemens S7-313C, S7-313C-2DP, S7-314 or S7-315-2DP
• Programming software: Siemens STEP7 Version 5.1 or higher
1. Connect PC and PLC using the RS232 programming cable with PC adapter
2. Switch on power supply unit
3. Switch on the compressed air supply
4. Release the EMERGENCY-STOP pushbutton (if available)
5. Overall reset PLC memory:
– Wait until the PLC has carried out its test routines.
CPU 31xC
– Press the mode selector switch to MRES. Keep the mode selector switch in
this position until the STOP LED comes on for the second time and stays on
(this takes 3 sec.). You can let go of the mode selector.
– Within 3 sec. you must press the mode selector switch back to MRES. The
STOP LED starts to flash rapidly and the CPU carries out a memory reset. You
can let go of the mode selector.
– When the STOP LED comes on permanently again, the CPU has completed the
memory reset.
– The data on the MMC (Micro Memory Card) are not deleted. This can be done
by switching to the connected PLC via menu "PLC / Display Accessible
Nodes" and deleting all blocks in the block folder.
CPU31x
– Turn the mode selector switch to MRES and keep the mode selector switch in
this position until the STOP LED comes on for the second time and stays on.
– Let go of the mode selector switch to STOP. Immediately you must turn the
mode selector switch back to MRES. The STOP LED starts to flash rapidly.
– You can let go of the mode selector switch.
– When the STOP LED comes on permanently the memory reset is completed.
– The PLC is ready for program download.
6. mode selector switch in STOP position
7. Start the PLC programming software
6.10
Loading the PLC program