MEMOBUS/Modbus Communication Error
Yaskawa · J1000 AC Drive
What does CE mean?
This minor fault indicates that control data was not received correctly for two seconds, primarily due to noise interference or incompatible communication settings. Noise can corrupt data transmission, while incorrect protocol settings or a too-short CE detection time can prevent proper communication. Unresolved, this fault prevents the drive from receiving critical control commands, leading to loss of control over the connected equipment.
Additional Steps
Steps 1–2 are listed in Priority Fix.
- 3
Adjust the CE detection time (H5-09) to be longer if it's currently shorter than the required communication cycle time.
- 4
Inspect the communications cable for disconnections or damage, and replace it if necessary.
- 5
Review PLC software settings and hardware for any incompatibilities or problems causing the error.