Issue:
How to set up Altivar Process Drive to communicate over Modbus Serial?

Product Line:
Altivar Process Drive (ATV630, ATV930, ATV650, ATV950, ATV660, ATV960, ATV680, ATV980)

Environment:
All serial numbers for Altivar 600 and 900 Process Drive

Cause:
N/A

Resolution:
Basic Settings
- Programming on the Drive

• Program Communication Settings
  • [Communication] [Comm parameters] [Modbus SL] [Modbus Fieldbus]
    • [Modbus Address] Add
    • [Bd.RateModbus] tbr
    • [Modbus Format] tFO
    • [Modbus Timeout] ttO
• Program Command Settings:​
  • [Complete settings] [Command and Reference]
    • ​For command speed from Network, program:
    • [Ref Freq 1 Config] Fr1 - Set to [Modbus] Mdb
    • [Ref 1B switching] rCb - Set to [Ref Freq Channel 1] Fr1
    • [Control Mode] CHCF - Set to [Not separ.] SIM
  • ​​Video: Setting an Auto/Manual or Reference Switching on the Altivar Process Drives
• Powercycle the drive

- Communicate with the Drive

• Using IO Profile
  • [Complete Settings] [Command and Reference] [Control Mode] - Set to IO
  • Command Word - 8501
    • Speed Reference Word - 8502 (Hz) and 8602 (rpm)
  • 16 bit word (Bit 0, 1, 2..... 15)
  • Start/Stop must turn on bit 0
    • Write a 1 to start
    • Write a 0 to stop
  • Bit 1 to 15 are assignable like logic inputs
    • Example: To assign a fault reset to bit 2 - [Fault reset] - Set to C302
• Using CIA402 (DriveCom Profile)
  • Works with all assemblies
  • [Control Mode] CHCF to [Not separ.] SIN or [Separate]
  • Command Word - 8501
    Speed Reference Word - 8502 (Hz) and 8602 (rpm)
  • No 16 bit word
  • Start/Stop
    • Sequence of values must be written to the drive
    • 6, 7 and 15
    • Toggle between 7 and 15 to start and stop

Related FAQ: How do I troubleshoot the Altivar Process Drive when it will not connect or communicate while over a Modbus Serial Network?

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