Inepro Metering – PRO Series 1 – 21
The PRO380-Mod can be connected for Modbus communication. The Modbus implementation used is
Modbus basic (standard). This means the following:
• Baudrate 9600 bits/sec
• 8 data bits
• even parity
• 1 stop bit
The baudrate can be lower to values 4800, 2400, 1200. Data, parity and stopbit cannot be changed.
The Modbus connection is on the terminals 22/23
When connecting the meter through a serial converter (RS485) for testing, please be aware that because
of not implementing the complete Modbus infrastructure, there will be a need to put an additional
resistor (120 ohms/ 0.25 watts) across the terminals (22 & 23) on the meter side.
For the registers used in the meter and how to interpreted the data, see the appendix "Register matrix".
Although INEPRO does not give support on third party software and hardware, we noticed good
experiences with Moxa products with our customers.
More info on Modbus can be found:
Physical:
http://www.modbus.org/docs/Modbus_over_serial_line_V1_02.pdf
Protocol:
http://www.modbus.org/docs/Modbus_Application_Protocol_V1_1b3.pdf
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