Read/Write request/response mismatch

What does 00D2 mean?

The scanner requested either a read or write operation, but the block-transfer module responded with the opposite type of operation. This indicates a protocol mismatch or incorrect module behavior.

• The scanner requested either a read or write but the block-transfer module responded with the opposite

Click steps to track your progress.

1. 1

   Verify the configured Read/Write operations and data structures for both the scanner module and the block-transfer module within the Logix 5000 controller's project to ensure they align.

2. 2

   Check all associated block-transfer instructions (e.g., BTW, BTR) in the Logix 5000 ladder logic for correct configuration of control tags, data lengths, and requested operation types (Read/Write).

3. 3

   Inspect the physical communication link between the scanner and the block-transfer module for proper termination, secure connections, and cable integrity.

4. 4

   Verify the firmware revisions of both the scanner module and the block-transfer module are compatible with each other and with the Logix 5000 controller's major revision.