# Setup a Modbus server

**URL:** <https://discourse.nodered.org/t/setup-a-modbus-server/23942>\
**Category:** General\
**Created:** [31 March 2020 06:05 UTC](https://discourse.nodered.org/t/setup-a-modbus-server/23942 "2020-03-31T06:05:51Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![henkkoren7](https://avatars.discourse-cdn.com/v4/letter/h/13edae/32.png) [@henkkoren7](https://discourse.nodered.org/u/henkkoren7)\
**Post date:** [31 March 2020 06:05 UTC](https://discourse.nodered.org/t/setup-a-modbus-server/23942/1 "2020-03-31T06:05:51Z")

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Hello,

I have a problem setting up a modbus server, hope someone can help me.  
I want to use the Raspberry as a Modbus Server.  
I want to connect vacuum pumps to the raspberry so that I have a monitor system  
Each pump has its own IP address.  
Pump 1: IP 129.1.0.25 port 502  
Pump 2: IP 129.1.0.26 port 502  
up to 6 pumps

The problem now is that the connection is constantly broken between the pumps. is due to the different IP addresses, i Think??  
Therefore I think a MODBUS server is the solution for me ?? I hope??  
I have already tried something but then the system crashes completely

My question.  
How should I configure the modbus server?  
which ip address should the raspberry have and which ip the modbus server etc

 ![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/1/4/142df9e81e77a1aaf943a0de57c9cc447908be46.png)

thank you in advance

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**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [30 May 2020 06:05 UTC](https://discourse.nodered.org/t/setup-a-modbus-server/23942/2 "2020-05-30T06:05:59Z")

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