Block-transfer request in progress
Allen-Bradley · Logix 5000
What does 00EC mean?
A block-transfer request is currently in progress, and a response is required before another request can be initiated. This indicates an attempt to start a new transfer before the previous one completed.
Common Causes
- There is currently a block-transfer request in progress and a response is required before another request can begin
Repair Steps & Checklist
Click steps to track your progress.
- 1
Inspect the Logix 5000 program logic associated with the block transfer instruction (e.g., MSG) to ensure proper sequencing and completion monitoring before re-enabling.
- 2
Monitor the status bits (e.g., .EN, .DN, .ER) of the block transfer instruction in Studio 5000 Logix Designer to observe its execution cycle and verify proper reset logic.
- 3
Verify the configuration of the block transfer instruction, including the communication path, data size, and target device address, for any discrepancies.
- 4
Check the operational status and responsiveness of the target device with which the Logix 5000 controller is attempting the block transfer.