Troubleshooting steps
Check I/O module status verify wiring check addressing
Siemens PLC
86C1 – I/O error
I/O module error
Details
I/O module error 86C1. Check I/O modules and connections.
Error typeerror
MeaningI/O error
Typical causesI/O module fault wiring fault addressing error
SolutionsCheck I/O module status verify wiring check addressing
Severitymedium
Catalog references
Vendor Information
Siemens86C1
Utilities
Troubleshooting Steps
Related
Related Siemens PLC Codes
FAQ
Common questions
Which module?
Check diagnostic buffer for module identification
Community
Discussion & Experiences
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