Combined Input Modules And Output Modules - Siemens SIMATIC S5-100U System Manual

Addressing
6.4

Combined Input Modules and Output Modules

With these modules it is possible to write data from the control program to the module and to read
in data from the module to the control program.
The byte addresses in the process image input table (PII) and process image output table (PIQ) are
identical. The meaning of the transferred data is usually different.
6.4.1 Output Modules with Error Diagnostics
In addition to the fault LED (red LED), the following output modules can signal errors to the CPU.
4 x 24 V DC / 0.5 A
4 x 24 V DC / 2.0 A
4 x 24 to 60 V DC / 0.5 A
You can read the error messages on input channels I X.0 and I X.1 (not with CPU 100, version
8MA01).
The following error messages are possible.
Table 6-1. Error Messages for Output Modules with Error Diagnostics
Address
I X.0
I X.1
X is the byte address (slot number) of the output module
Signal state "1" indicates an error is present. The PII is set to "0" for output modules without error
diagnostics.
6-6
(6ES5 440-8MA12)
(6ES5 440-8MA22)
(6ES5 450-8MB11)
Type of Error
Short circuit on an output channel / fuse blown
or
no-load voltage
Defective module (output transistor shorted)
S5-100U
EWA 4NEB 812 6120-02b