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Serial Baud Rate
(register 40203, decimal offset 202 (hexadecimal 0x0CA))
This register sets the serial communication data rate. It has a factory default value of 0, corre-
sponding to a baud rate of 19200. Use the Write Single Register command to change this value
to any of the following valid values: 0=19200, 1=9600, 2=4800, 3=2400, 4=1200, 5=600,
6=300. The new baud rate does not take effect until the sensor is power cycled, or if the restart
communications diagnostic command (08, with subfunction 01) is received.
Serial Parity Setting
(register 40204, decimal offset 0203 (hexadecimal 0x00CB))
This register sets the serial parity setting. It has a factory default value of 2 corresponding to
Even parity. Use the Write Single Register command to change this value to any of the follow-
ing valid values: 0=None, 1=Odd, 2=Even. The new parity setting does not take effect until the
sensor is power cycled, or if the restart communications diagnostic command (08, with subfunc-
tion 01) is received.
Coil Registers
The GPLP Modbus probe does not utilize coil registers or coil read/write command functions.
Using any coil read/write command functions will return an exception response with an excep-
tion code of 01 (function code not supported).
Discrete Inputs
The GPLP Modbus probe does not utilize discrete inputs or support the discrete input read com-
mand. Using the read discrete input command will return an exception response with exception
code of 01 (function code not supported).
