modbuslogger is a simple example of using the modbus-serial package for logging the data of a Modbus device, especially the Eastron SDM72D. It can talk to a TCP Modbus server or directly to a serial connected Modbus device.
usage: node index.js [-i deviceid] [-r registerid | -a] [destination]
with:
-i deviceid use device with deviceid (default: 1)
-r registerid read specified input register instead of all (multiple allowed)
-a read all holding registers as well
destination the destination to read from (default: 127.0.0.1), one of:
serial device with optional speed if other than 9600, e.g. /dev/ttyUSB1:19200
hostname or IP address with optional port if other than 502, e.g. modbussserver:1502 The most simple usage is with node index.js which will open a connection to a local Modbus TCP server (such as mbusd)
at port 502 and retrieving all input registers for device ID 1.
Sample output looks like this:
Total system power:384
Import Wh since last reset:123123.339
Export Wh since last reset:0.020
Total kwh:123123.359
Settable total kWh:123123.359
Settable import kWh:123123.339
Settable export kWh:0.020
Import power:384
Export power:0
A recent NodeJS is required including npm. In order to install the required modules, just run npm install.