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Troubleshooting
A-1
SIMATIC 505–2557 Installation and Operation Guide
Appendix A
Troubleshooting
If the module provides improper readings or the status indicator is not on,
use the following chart to determine the appropriate corrective
action.
Figure A-1
Troubleshooting Matrix
!
CAUTION
The module fuse (F1) is not user servicable. If this fuse is blown, the module
has a serious component failure.
Do not attempt to repair or replace fuse (F1). Return the module to your nearest
Siemens distributor or Siemens Energy & Automation, Inc. for repair.
When it is inconvenient to visually check the status indicator, use the
TISOFT ”Display Failed I/O” or ”Show PLC Diagnostics” support functions.
If after consulting the chart above, you are unable to diagnose or solve the
problem, contact your Siemens Energy & Automation, Inc., distributor or
sales office.