# Modbus TCP address X320m

**URL:** <https://forum.inductiveautomation.com/t/modbus-tcp-address-x320m/52802>\
**Category:** Ignition\
**Created:** [November 6, 2021, 1:42am UTC](https://forum.inductiveautomation.com/t/modbus-tcp-address-x320m/52802 "2021-11-06T01:42:43Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![Kelltek](https://avatars.discourse-cdn.com/v4/letter/k/b4bc9f/32.png) [@Kelltek](https://forum.inductiveautomation.com/u/Kelltek)\
**Post date:** [November 6, 2021, 1:42am UTC](https://forum.inductiveautomation.com/t/modbus-tcp-address-x320m/52802/1 "2021-11-06T01:42:43Z")

</div>

I have an x-320M control by web device that supports modbus/tcp.

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/f/9/f970627e68d0dbcc7b082c5cd90e713015d9e986.png)

Unfortunately I can’t seem to map any registers. Even with a good connection to the device any tags or address structure times out or reports bad.

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/9/a/9a4217ae92edbeaedc755a8a8cc34007ade0a5a5.png)

I have tried many different adjustments and the closest I can get is errors saying I can’t assign tag values from another tag.

At a loss because most other Modbus coms have not been a problem.

---

<div class="post-metadata">

**Author:** ![rourksb](https://avatars.discourse-cdn.com/v4/letter/r/ecccb3/32.png) [@rourksb](https://forum.inductiveautomation.com/u/rourksb)\
**Post date:** [November 6, 2021, 10:23am UTC](https://forum.inductiveautomation.com/t/modbus-tcp-address-x320m/52802/2 "2021-11-06T10:23:49Z")

</div>

Try unit id 1. Also try using the mode 485 address. Plenty of free modbus tools out there that can help troubleshoot this.

---

<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:** [November 6, 2021, 2:25pm UTC](https://forum.inductiveautomation.com/t/modbus-tcp-address-x320m/52802/3 "2021-11-06T14:25:40Z")

</div>

The “address” column is clearly zero-based as the “584/984” show one-based. Make sure your device setting is zero-based. That first float would be manually addressed as `HRF1296` or `1.HRF1296`. You might also need to adjust the word order setting.