# ABB ACS550 VFD to Ignition Directly?

**URL:** <https://forum.inductiveautomation.com/t/abb-acs550-vfd-to-ignition-directly/32088>\
**Category:** Ignition\
**Created:** [February 10, 2020, 10:38am UTC](https://forum.inductiveautomation.com/t/abb-acs550-vfd-to-ignition-directly/32088 "2020-02-10T10:38:45Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![rajesh.dayala](https://avatars.discourse-cdn.com/v4/letter/r/91b2a8/32.png) [@rajesh.dayala](https://forum.inductiveautomation.com/u/rajesh.dayala)\
**Post date:** [February 10, 2020, 10:38am UTC](https://forum.inductiveautomation.com/t/abb-acs550-vfd-to-ignition-directly/32088/1 "2020-02-10T10:38:45Z")

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Hi,

Does any one know, How to connect ABB ACS550 VFD to Ignition directly or any other methods?

Please suggest.

Thanks

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**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\
**Post date:** [February 10, 2020, 12:27pm UTC](https://forum.inductiveautomation.com/t/abb-acs550-vfd-to-ignition-directly/32088/2 "2020-02-10T12:27:44Z")

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According to its user manual, those drives’ embedded fieldbus is Modbus on RS485. With suitable hardware, Ignition can make a Modbus serial or a Modbus RTU over TCP connection. The former needs Ignition’s serial support module in addition to the Modbus driver.

The manual also shows that the drive supports other protocols via add-on fieldbus modules. The only one of those that can be used directly with Ignition is the Ethernet interface, and only via the premium version of my third-party [Ethernet/IP Class1 Communications Module](https://inductiveautomation.com/moduleshowcase/module/automation-professionals-llc-ethernetip-class-1-communications).

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**Author:** ![pphillips](https://avatars.discourse-cdn.com/v4/letter/p/da6949/32.png) [@pphillips](https://forum.inductiveautomation.com/u/pphillips)\
**Post date:** [February 10, 2020, 3:23pm UTC](https://forum.inductiveautomation.com/t/abb-acs550-vfd-to-ignition-directly/32088/3 "2020-02-10T15:23:06Z")

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According to [this](https://new.abb.com/drives/connectivity/fieldbus-connectivity/modbus-tcp) site, the RETA-01 or RETA-02 fieldbus adapters on the ACS550 support Modbus TCP directly. If you want to control them with an Allen-Bradley PLC or Phil’s module, you will need the RETA-01.

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<div class="post-metadata">

**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\
**Post date:** [February 10, 2020, 3:38pm UTC](https://forum.inductiveautomation.com/t/abb-acs550-vfd-to-ignition-directly/32088/4 "2020-02-10T15:38:03Z")

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> [@pphillips](#):
>
> the RETA-01 or RETA-02 fieldbus adapters on the ACS550 support Modbus TCP directly

Ah, missed that. That would be convenient.

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**Author:** ![rajesh.dayala](https://avatars.discourse-cdn.com/v4/letter/r/91b2a8/32.png) [@rajesh.dayala](https://forum.inductiveautomation.com/u/rajesh.dayala)\
**Post date:** [February 11, 2020, 4:45am UTC](https://forum.inductiveautomation.com/t/abb-acs550-vfd-to-ignition-directly/32088/5 "2020-02-11T04:45:51Z")

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Thanks you all for taking time and replying your suggestions, This information was very much helpful.