Table of Contents
Advertisement
08.89
5
PLC
The PLC area is necessary for the input to the user interfaces and the processing of PLC
standard message frames.
The PLC basic software supplies the user interfaces from the multiport RAM.
The standard function blocks process the standard message frames.
5.1
Structure
An outline overview of the PLC is given in figure "PLC structure".
PLC
Kernel
sequences
COM
Interface module
bus
PLC structure
© Siemens AG 1989 All Rights Reserved
SINUMERIK 840/880 (PJ)
User interface
Standard
functions
PLC basic
software
Multiport RAM
Dual port RAM
Interface module
6FC5 197-0AB20-0BP0
serial
5 PLC
5.1 Structure
5–1
Advertisement
Table of Contents
