# Productivity PLC Modbus

**URL:** <https://forum.inductiveautomation.com/t/productivity-plc-modbus/57127>\
**Category:** Ignition\
**Tags:** ignition80\
**Created:** [March 11, 2022, 8:10pm UTC](https://forum.inductiveautomation.com/t/productivity-plc-modbus/57127 "2022-03-11T20:10:05Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![EduardoChega](https://avatars.discourse-cdn.com/v4/letter/e/c5a1d2/32.png) [@EduardoChega](https://forum.inductiveautomation.com/u/EduardoChega)\
**Post date:** [March 11, 2022, 8:10pm UTC](https://forum.inductiveautomation.com/t/productivity-plc-modbus/57127/1 "2022-03-11T20:10:05Z")

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I have a 2000 series Productivity PLC, I’m having issues reading the Modbus addresses in Ignition, has anyone worked with these PLCs before?

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**Author:** ![josborn](https://avatars.discourse-cdn.com/v4/letter/j/4bbf92/32.png) [@josborn](https://forum.inductiveautomation.com/u/josborn)\
**Post date:** [March 11, 2022, 8:19pm UTC](https://forum.inductiveautomation.com/t/productivity-plc-modbus/57127/2 "2022-03-11T20:19:21Z")

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I have not but Modbus is Modbus, can you describe the issue you are seeing?

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<div class="post-metadata">

**Author:** ![EduardoChega](https://avatars.discourse-cdn.com/v4/letter/e/c5a1d2/32.png) [@EduardoChega](https://forum.inductiveautomation.com/u/EduardoChega)\
**Post date:** [March 11, 2022, 8:20pm UTC](https://forum.inductiveautomation.com/t/productivity-plc-modbus/57127/3 "2022-03-11T20:20:47Z")

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I’m setting up on the PLC the addresses but I don’t see the values reflected on Ignition…

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<div class="post-metadata">

**Author:** ![josborn](https://avatars.discourse-cdn.com/v4/letter/j/4bbf92/32.png) [@josborn](https://forum.inductiveautomation.com/u/josborn)\
**Post date:** [March 11, 2022, 8:22pm UTC](https://forum.inductiveautomation.com/t/productivity-plc-modbus/57127/4 "2022-03-11T20:22:10Z")

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Try changing zero based addressing and reverse word order.

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<div class="post-metadata">

**Author:** ![EduardoChega](https://avatars.discourse-cdn.com/v4/letter/e/c5a1d2/32.png) [@EduardoChega](https://forum.inductiveautomation.com/u/EduardoChega)\
**Post date:** [March 11, 2022, 8:27pm UTC](https://forum.inductiveautomation.com/t/productivity-plc-modbus/57127/5 "2022-03-11T20:27:47Z")

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I already did but still nothing, at this point I’m just trying the simplest thing which is reading coils, so I created a couple tags on Ignition as integers just to read 0’s and 1’s but I’m only getting 0’s which is very confusing because those coils are actually activated on the PLC side. I did the whole addressing as well on the PLC side.

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<div class="post-metadata">

**Author:** ![josborn](https://avatars.discourse-cdn.com/v4/letter/j/4bbf92/32.png) [@josborn](https://forum.inductiveautomation.com/u/josborn)\
**Post date:** [March 11, 2022, 8:31pm UTC](https://forum.inductiveautomation.com/t/productivity-plc-modbus/57127/6 "2022-03-11T20:31:05Z")

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What do your tag opc item paths look like? If the device id is not default you may need to include it in your opc item path.