Meter Optional Optically Isolated RS-485 or RS-232 communication port, use Module RTU communication protocol, baud rate is 2400-38400 bps. When using the RS-485 interface can be connected directly to each host up to 63 meter.
- The host can read and send work status instrument RST, HOLD commands.
- The host can read the parameter values, each one or more parameter values read.
- The host can write parameter values, each one or more parameter value written.
Each parameter has both RAM address EEPROM address. Since the number of writes to the EEPROM is limited (about 100,000), to replace the frequency parameter is too large, no written proposal written to limit the number of RAM, but when powers on again, the instrument uses data EEPROM.
COMM communication parameter is set to OFF, turn off the meter communication function; when set to RO, the instrument can only read the parameter value and working conditions, You can not modify the parameter value; when set to RW, either read the meter parameter value and working conditions, you can modify the parameter values.
>> GW621/GW626/GW636 function Pulse meter communication Instructions >> indetail communication use, Download : http://www.khae.cn/support/manual pgw620.pdf