Fatek FBs Communication Error Code 2

Fatek PLC & VFD Warning Communication

Model: FBs | Code: 2

Applicable Systems
FBs-MA FBs-MC FBs-MN B1 HB1

Symptoms

The slave PLC received a data value that is outside the acceptable range or format for the specified command. The communication request is rejected and an error code 2 is returned to the master.

Possible Causes

  • Data value in the request exceeds the valid range for the target register
  • Data type mismatch between command and target component
  • Incorrect scaling or unit conversion in the master application

Troubleshooting Steps

  1. Step 1: Check the data value being sent in the communication request against the valid range in the FATEK component reference
    Data value falls within the specified range for the target register type
  2. Step 2: Verify the command code matches the expected data type (bit vs word vs double word)
    Command code and data type are compatible
  3. Step 3: Correct the data value in the master application and resend the request
    PLC responds with error code 0 (no error)

How to Reset

Correct the data value in the communication request and resend. No power cycle is required.

Related Fatek Fault Codes

Source: FATEK FBs Communication Protocol Manual, Appendix 1

Category: PLC & VFD