Siemens PLC

2533 – OB request error

OB call error – wrong number

Details

An organization block was called with an incorrect block number.

Error typeerror
MeaningOB number error
Typical causesIncorrect OB number in call statement OB number out of valid range
SolutionsCheck program code verify OB number is valid correct call statement
Severitymedium

Catalog references

Vendor Information

Siemens2533

Utilities

Troubleshooting Steps

Troubleshooting steps

Check program code verify OB number is valid correct call statement

Other codes

Other Siemens PLC Codes

80A0 – Memory error

Memory allocation error

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80A1 – Memory error

Memory error in retentive data area

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80A2 – Memory error

Memory error in work memory

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80A3 – Memory error

Memory error in load memory

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80A4 – Memory error

Memory card error

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FAQ

Common questions

What are valid OB numbers?

Refer to CPU documentation for valid organization block numbers for your CPU type.