Siemens PLC

86B0 – I/O error

I/O module addressing error

Details

An I/O module is addressed incorrectly or address conflict exists.

Error typeerror
MeaningAddressing error
Typical causesDuplicate addresses incorrect address setting module at wrong position
SolutionsCheck hardware configuration verify module addresses ensure unique addressing
Severityhigh

Catalog references

Vendor Information

Siemens86B0

Utilities

Troubleshooting Steps

Troubleshooting steps

Check hardware configuration verify module addresses ensure unique addressing

Other codes

Other Siemens PLC Codes

80A0 – Memory error

Memory allocation error

→

80A1 – Memory error

Memory error in retentive data area

→

80A2 – Memory error

Memory error in work memory

→

80A3 – Memory error

Memory error in load memory

→

80A4 – Memory error

Memory card error

→

FAQ

Common questions

How do I check module addresses?

Use hardware configuration tool to view all module addresses and verify no conflicts.