Modbus TCP Slave simulator in Node.js

Dummy modbus slave server in node.js

Recommended alternative

c-modbus-slave

Installation

sudo npm install 

Test

sudo node server

Docker

From the scratch

# build docker image 
docker build -t takawang/node-modbus-slave .

# run the image (host_port:container_port)
docker run -p 502:502 -d --name slave takawang/node-modbus-slave
# Print app output
docker logs <container id>
# Enter the container
docker exec -it <container id> /bin/bash

Pull pre-built docker image

docker pull takawang/node-modbus-slave

# arm version
#docker pull arm-node-modbus-slave

Credit

According to node-modbus-tcp package, I rewrite some handle functions for testing.