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How do I send a start/stop and a speed command to the Altivar Process Drive over Modbus (Embedded) protocol?

Issue:
How do I send a start/stop and a speed command to the Altivar Process Drive over Modbus (Embedded) protocol?

Product Line:
Altivar Process Drive

Environment:
All serial numbers for Altivar Process Drive

Cause:
N/A

Resolution:

Command:
DRIVECOM (CiA402 profile)


On the Drive,
[Complete settings] [Command and Reference] [Control Mode] CHCF
- Set to [Not Separ.] or [Seperate Mode]

Command Word Register: 8501
To start the drive under DRIVECOM profile, you will need to write a decimal value of 6, 7, and 15 directly to the command word 8501
Toggling 7 and 15 will either stop or start the drive.

I/O Profile

On the Drive,
[Complete settings] [Command and Reference] [Control Mode] CHCF
- Set to [I/O profile]

Command Word Register: 8501 (16 bit register)
To start the drive under I/O Profile profile you will need to toggle off and on bit 0. 


Speed Reference:

Reference Frequency: 8502
Units: 0.1Hz (Example: decimal value of 600 = 60hz)

After Command is sent a speed reference is given by writing a decimal value in units of 0.1Hz to the register 8502



Reference Frequency: 8602
Units:1 rpm (Example: decimal value of 1500 = 1500 rpm)

After Command is sent a speed reference is given by writing a decimal value in units of 1 rpm to the register 8602. 
[Nominal Motor Speed] value will have to be set correctly in the [Motor parameters] Menu.



 
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