Addressing The Expansion Inputs/Outputs; Sample Program - Siemens SIMATIC S5 Manual

IP 265 Expansion
12.4

Addressing the Expansion Inputs/Outputs

In the IP 265 user program, the expansion interface is referenced via fixed addresses.
The expansion interface comprises 8 pins on the IP 265's 15-pin sub D "INTERFACE" socket.
These pins may be used as expansion inputs or expansion outputs.
Table 12-1. Addresses of the Expansion Inputs/Outputs
Inputs/outputs
Expansion inputs
*
Expansion outputs
*
* Alternatives only
Note
You may use each of the 8 expansion interface pins as either expansion input or
expansion output (you can program the pins with COM 265).
12.5

Sample Program

The following sample program shows an expansion which became necessary because there was
not a sufficient number of digital inputs on one IP 265 to solve the problem at hand. In addition,
parameters are interchanged between one of the two IPs and the CPU.
Sample application:
Problem definition
A web of paper is transported over several driving and guide pulleys for subsequent processing.
Four driving pulleys must be immediately shut down if the paper should tear, as a paper jam would
otherwise ensue.
12-6
Addresses
I 2.y;
Q 2.y;
Fast shutdown in the event of a malfunction
y (0 to 7)
y (0 to 7)
IP 265
EWA 4NEB 812 6130-02a