Siemens SINUMERIK 840C - Manual (Page 57)

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Siemens AG 2001 All Rights Reserved 6FC5197– j AA50 3-7
SINUMERIK 840C (IA)
Procedure PLC 135 WB2 with RESTART EPROM submodule and PLC 135 WD
as from SW 3
Prerequisites: The PLC user program should exist either on diskette or on the
hard disk, the RAM of the PLC CPU is empty.
Step Description
1 The Restart EPROM submodule must be plugged in the X231 sub-
module slot (PLC 135 WB2 only).
2 Connect PG7xx to the control and load the STEP5 program.
3 Select General reset mode on the control.
SK “Diagnosis” –> SK “Start-up” –> SK “General reset mode”
4 Transfer the PLC user program from the PG7xx into the control. The
PLC user program is now in the buffered RAM of the PLC CPU.
5 In order to prevent a loss of data, it is advisable to store the PLC user
program on the hard disk of the MMC CPU. You can press the “Save
PLC” SK to achieve this. The selection becomes effective as soon as
the “End general reset mode” SK is pressed. The PLC user program
is stored in the Services area under User/PLC/Programs as
ANW_PRG file. You can also copy this program to another name. In
this way you can store a number of different PLC user programs on
the hard disk.
Note If you press the “PLC gen. reset” softkey the PLC user program in the RAM is
deleted and the user program stored on the hard disk as ANW_PRG is then loa-
ded into the RAM. The data in the user data memory are also deleted.
The RAM remains clear if the ANW_PRG file is not in the User/PLC/Program di-
rectory or has been deleted; no PLC user program is loaded.
If the PLC user program is available in PC format, you must read in the program
via the V24 interface. The PLC user program is then automatically stored under
User/PLC/Program as ANW_PRG file.
S
A PLC general reset must then be performed.
3 PLC Installation
3.4 Procedure for starting up the PLC