# Serial Modbus

**URL:** <https://forum.inductiveautomation.com/t/serial-modbus/10261>\
**Category:** 3rd Party Modules\
**Created:** [July 23, 2015, 11:55am UTC](https://forum.inductiveautomation.com/t/serial-modbus/10261 "2015-07-23T11:55:18Z")\
**Posts on this page:** 8\
**Page:** 1

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**Author:** ![nifemi](https://avatars.discourse-cdn.com/v4/letter/n/a5b964/32.png) [@nifemi](https://forum.inductiveautomation.com/u/nifemi)\
**Post date:** [July 23, 2015, 11:55am UTC](https://forum.inductiveautomation.com/t/serial-modbus/10261/1 "2015-07-23T11:55:18Z")

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Hello all,

Is there any support for reading data directly from a Modbus device connected to a local serial port? If anyone has tackled this issue before, any pointers are appreciated.

Thanks.

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**Author:** ![Kyle\_Chase](https://avatars.discourse-cdn.com/v4/letter/k/9de0a6/32.png) [@Kyle\_Chase](https://forum.inductiveautomation.com/u/Kyle_Chase)\
**Post date:** [July 24, 2015, 3:05pm UTC](https://forum.inductiveautomation.com/t/serial-modbus/10261/2 "2015-07-24T15:05:39Z")

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Install the serial module in your gateway. As long as the morbid module is installed, which it is by default, you should see sort for modbus serial.

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**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\
**Post date:** [July 24, 2015, 3:17pm UTC](https://forum.inductiveautomation.com/t/serial-modbus/10261/3 "2015-07-24T15:17:43Z")

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> [@Kyle Chase](#):
>
> As long as the morbid module is installed

😆😆😆

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**Author:** ![Robert](https://avatars.discourse-cdn.com/v4/letter/r/e95f7d/32.png) [@Robert](https://forum.inductiveautomation.com/u/Robert)\
**Post date:** [July 24, 2015, 4:55pm UTC](https://forum.inductiveautomation.com/t/serial-modbus/10261/4 "2015-07-24T16:55:19Z")

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I love how he caught the true essence of that protocol in a single word.

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**Author:** ![AlThePal](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/althepal/32/3603_2.png) [@AlThePal](https://forum.inductiveautomation.com/u/AlThePal)\
**Post date:** [August 3, 2015, 10:56am UTC](https://forum.inductiveautomation.com/t/serial-modbus/10261/5 "2015-08-03T10:56:22Z")

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Hi Kyle, what do you mean by “you should see sort for modbus serial”? Are you suggesting you could implement a basic Modbus server in a gateway script?

I need to interface a number of Modbus serial devices to Ignition and I’d rather use the built-in Modbus server. I thought this only supported Modbus TCP, so I was planning on using an external Modbus serial to Ethernet converter.

Is there another way?

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**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\
**Post date:** [August 3, 2015, 2:08pm UTC](https://forum.inductiveautomation.com/t/serial-modbus/10261/6 "2015-08-03T14:08:32Z")

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[quote=“AlThePal”]Hi Kyle, what do you mean by “you should see sort for modbus serial”? Are you suggesting you could implement a basic Modbus server in a gateway script?

I need to interface a number of Modbus serial devices to Ignition and I’d rather use the built-in Modbus server. I thought this only supported Modbus TCP, so I was planning on using an external Modbus serial to Ethernet converter.

Is there another way?[/quote]

If you install the gateway-scoped serial support module and then restart, you’ll see a new Modbus RTU driver entry.

edit: I think you want to be on 7.7.5 if you’re using 7.7.x for this module - there was a build issue that prevented the RTU driver from working in previous 7.7.x versions.

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**Author:** ![AlThePal](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/althepal/32/3603_2.png) [@AlThePal](https://forum.inductiveautomation.com/u/AlThePal)\
**Post date:** [August 3, 2015, 2:14pm UTC](https://forum.inductiveautomation.com/t/serial-modbus/10261/7 "2015-08-03T14:14:19Z")

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That’s good to know! That should mean I can put in a solution using only Ignition and a multi-port serial card.

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**Author:** ![nifemi](https://avatars.discourse-cdn.com/v4/letter/n/a5b964/32.png) [@nifemi](https://forum.inductiveautomation.com/u/nifemi)\
**Post date:** [August 5, 2015, 8:47am UTC](https://forum.inductiveautomation.com/t/serial-modbus/10261/8 "2015-08-05T08:47:18Z")

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This should work - thanks all, back from vacation to find this issue solved 🙂
