Modbus TCP Server Docker
The Modbus TCP Server is a simple Modbus server for debugging and simulation.
Docker
docker run --name modbus-server -p 5020:5020 -d oitc/modbus-server
docker run --name modbus-server -p 5020:5020 -d -v $PWD/server_config.json:/server_config.json oitc/modbus-server -f /server_config.json
Docker Compose
modbus-server:
container_name: modbus-server
image: oitc/modbus-server
restart: always
command: -f /server_config.json
ports:
- 5020:5020
volumes:
- ./server.json:/server_config.json:ro
Configuration
An example can be found in the GIT repo: abb_coretec_example.json
Default configuration
{
"server": {
"listenerAddress": "0.0.0.0",
"listenerPort": 5020,
"tlsParams": {
"description": "path to certificate and private key to enable tls",
"privateKey": null,
"certificate": null
},
"logging": {
"format": "%(asctime)-15s %(threadName)-15s %(levelname)-8s %(module)-15s:%(lineno)-8s %(message)s",
"logLevel": "DEBUG"
}
},
"registers": {
"description": "initial values for the register types",
"zeroMode": false,
"initializeUndefinedRegisters": true,
"discreteInput": {},
"coils": {},
"holdingRegister": {},
"inputRegister": {}
}
}
Predefined registers
{
"server": {
"listenerAddress": "0.0.0.0",
"listenerPort": 5020,
"tlsParams": {
"description": "path to certificate and private key to enable tls",
"privateKey": null,
"certificate": null
},
"logging": {
"format": "%(asctime)-15s %(threadName)-15s %(levelname)-8s %(module)-15s:%(lineno)-8s %(message)s",
"logLevel": "DEBUG"
}
},
"registers": {
"description": "initial values for the register types",
"zeroMode": false,
"initializeUndefinedRegisters": true,
"discreteInput": {},
"coils": {},
"holdingRegister": {
"123": "0xAABB",
"246": "0x0101"
},
"inputRegister": {}
}
}