7.10 Modbus Network Related Configurable Parameter Registers
These parameter registers set up the MFU for network communications.
7.10.1 Modbus Address (Register 22)
The Modbus Address is the address on the network that the Modbus Module will respond to. The
address can be in the range 1 to 247, though 247 is generally not used as this is the default address
and may be used by any newly introduced device on the network.
With a dual channel unit both channels can use the same address or different addresses.
7.10.2 Baud Rate (Register 23)
Register 23 sets the communication baud rate. On a dual channel unit both channels operate at the
same baud rate.
7.10.3 Parity and Stop Bits (Register 24)
The parity and number of stop bits used in the communications is selected by altering the content of
this register. On a dual channel unit both channels operate using the same parity and stop bit setting.
7.10.4 Termination (Register 25)
This parameter register is used to switch the network termination on within the MFU. This should only
be done where the actuator is the last device on a network segment. See Section 4.4.
7.10.5 Actuator Tag Name (Register 26 to 31)
The MFU may be programmed to contain a 12 character tag name string in these registers. Each byte
contains one character.
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