Siemens PLC

7004 – CPU error

CPU power supply error

Details

CPU power supply voltage is outside acceptable range.

Error typeerror
MeaningPower supply error
Typical causesPower supply voltage too high or too low power supply defective
SolutionsCheck input voltage verify power supply specifications replace power supply if defective
Severitycritical

Catalog references

Vendor Information

Siemens7004

Utilities

Troubleshooting Steps

Troubleshooting steps

Check input voltage verify power supply specifications replace power supply if defective

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 voltage is required?

Check CPU manual for required input voltage typically 24V DC or 120/230V AC.