# Modbus tcp connection

**URL:** https://discourse.nodered.org/t/modbus-tcp-connection/8147
**Category:** General
**Created:** [19 February 2019 11:19 UTC](https://discourse.nodered.org/t/modbus-tcp-connection/8147 "2019-02-19T11:19:23Z")
**Posts on this page:** 5
**Page:** 1

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### Author: ![Madhumati](https://avatars.discourse-cdn.com/v4/letter/m/bb73d2/32.png) [@Madhumati](https://discourse.nodered.org/u/Madhumati)
#### Post date: [19 February 2019 11:19 UTC](https://discourse.nodered.org/t/modbus-tcp-connection/8147/1 "2019-02-19T11:19:23Z")

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Hello,

I am trying to communicate Modbus TCP node with Modscan ,  
Can you please help me in this regards?

 ![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/2X/4/40a905f1a3b28798be5d256684f2731552a03a89.png)

 ![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/2X/e/ee82e632f06391821ab8010d7ed8f711c6cc4c79.png)  
 ![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/2X/3/3a99a6db94ca33c34b01e617120ff825cdbe55d6.png)

I am putting Modbus TCP IP arress as 192.168.0.100 in ndeRED for my device & trying to connect Modscan with 192.168.0.150....but not communicating

BR  
Madhumati

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### Author: ![ukmoose](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/ukmoose/32/13_2.png) [@ukmoose](https://discourse.nodered.org/u/ukmoose)
#### Post date: [19 February 2019 12:02 UTC](https://discourse.nodered.org/t/modbus-tcp-connection/8147/2 "2019-02-19T12:02:02Z")

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Which Modbus node have you installed? node-red-contrib-.....?

What version of Node-RED and nodejs are you running ( both listed when you startup Node-RED)

What is running on 192.168.0.150?

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<div class="post-metadata">

### Author: ![Madhumati](https://avatars.discourse-cdn.com/v4/letter/m/bb73d2/32.png) [@Madhumati](https://discourse.nodered.org/u/Madhumati)
#### Post date: [19 February 2019 12:35 UTC](https://discourse.nodered.org/t/modbus-tcp-connection/8147/3 "2019-02-19T12:35:01Z")

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Node-REd version - 0.18.7

node-red-contrib-modbus@2.3.2-r0

There is PC iwth Modscan installed having 192.168.0.150, I am nt sure if I can communicate this node with Modscan software?

BR

Madhumati

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<div class="post-metadata">

### Author: ![ukmoose](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/ukmoose/32/13_2.png) [@ukmoose](https://discourse.nodered.org/u/ukmoose)
#### Post date: [19 February 2019 12:45 UTC](https://discourse.nodered.org/t/modbus-tcp-connection/8147/4 "2019-02-19T12:45:49Z")

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What version of nodejs? Any reason your version of Node-RED and the contrib node you are using is so far behind the current versions?

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### Author: ![Madhumati](https://avatars.discourse-cdn.com/v4/letter/m/bb73d2/32.png) [@Madhumati](https://discourse.nodered.org/u/Madhumati)
#### Post date: [25 February 2019 06:24 UTC](https://discourse.nodered.org/t/modbus-tcp-connection/8147/5 "2019-02-25T06:24:22Z")

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Thanks I am able to test it with Modsim i.e Modbus TCP serevr ..........but still struggeling with Modscan Modbus TCP client...I will update shortly

BR  
Madhumati