# Cannot Connect to Modbus Device

**URL:** <https://forum.inductiveautomation.com/t/cannot-connect-to-modbus-device/19913>\
**Category:** Ignition\
**Created:** [October 1, 2018, 4:01pm UTC](https://forum.inductiveautomation.com/t/cannot-connect-to-modbus-device/19913 "2018-10-01T16:01:30Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![ryanjmclaughlin](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/ryanjmclaughlin/32/4318_2.png) [@ryanjmclaughlin](https://forum.inductiveautomation.com/u/ryanjmclaughlin)\
**Post date:** [October 1, 2018, 4:01pm UTC](https://forum.inductiveautomation.com/t/cannot-connect-to-modbus-device/19913/1 "2018-10-01T16:01:30Z")

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I am having an odd problem I have been bashing at for too long and must be missing something simple… We have some chart recorders (Chino) that I cannot connect Ignition too. But, I can connect fine with a generic modbus client.

I fired up wireshark and it seems Ignition can never even handshake the connection. I have a single tag setup for the device as an IR100, source type integer.

 ![](https://us1.discourse-cdn.com/inductiveautomation/original/2X/a/a3597cd3c89cd00772cc63dbec68d9b25e51f6aa.png)

ANy ideas?

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**Author:** ![paul-griffith](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/paul-griffith/32/37249_2.png) [@paul-griffith](https://forum.inductiveautomation.com/u/paul-griffith)\
**Post date:** [October 1, 2018, 4:13pm UTC](https://forum.inductiveautomation.com/t/cannot-connect-to-modbus-device/19913/2 "2018-10-01T16:13:34Z")

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Does the modbus device support multiple remote connections?

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<div class="post-metadata">

**Author:** ![ryanjmclaughlin](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/ryanjmclaughlin/32/4318_2.png) [@ryanjmclaughlin](https://forum.inductiveautomation.com/u/ryanjmclaughlin)\
**Post date:** [October 1, 2018, 4:14pm UTC](https://forum.inductiveautomation.com/t/cannot-connect-to-modbus-device/19913/3 "2018-10-01T16:14:41Z")

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No, but only one was connected at the time (sorry should have mentioned that). I have ignition or the other app disabled and only attempt a single connection.

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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:** [October 1, 2018, 5:28pm UTC](https://forum.inductiveautomation.com/t/cannot-connect-to-modbus-device/19913/4 "2018-10-01T17:28:46Z")

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Try `1.IR100` as the address?

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<div class="post-metadata">

**Author:** ![ryanjmclaughlin](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/ryanjmclaughlin/32/4318_2.png) [@ryanjmclaughlin](https://forum.inductiveautomation.com/u/ryanjmclaughlin)\
**Post date:** [October 1, 2018, 5:49pm UTC](https://forum.inductiveautomation.com/t/cannot-connect-to-modbus-device/19913/5 "2018-10-01T17:49:35Z")

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Still same behavior.

 ![](https://us1.discourse-cdn.com/inductiveautomation/original/2X/a/ade9ecf0a21892eec2f19ae67707818eabde6836.png)