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ErrorLib — Industrial Fault Code Library

Disclaimer: ErrorLib is an independent technical reference tool. While we aim for accuracy, always verify with the manufacturer’s official service manuals before performing maintenance on industrial equipment. ErrorLib is not affiliated with the brands listed.

88

Software Handshake Error

Allen-Bradley · PowerFlex 700

What does 88 mean?

A microprocessor handshake error has occurred. This indicates an internal communication or processing issue within the drive's control software/hardware, preventing proper execution.

Common Causes

  • Failure in the software communication handshake protocol.
  • Synchronization issue between control units or modules.
  • Data mismatch during inter-process communication.
  • Timing violation in software message exchange.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Replace the Main Control Board.

Browse all codes in this manual (49)
Verified technical data. Last updated: April 2026

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100Parameter Checksum Error101UserSet1 Chksum102UserSet2 Chksum
Source: Allen-Bradley PowerFlex 700
Open Manual (Page 88)Search more codes in this manual