Instruction Manual
D103597X012
D4 Valve with easy-Drive Actuator
October 2017
11
Changing the Inputs from Default Settings
All configuration within the valve is done by setting values in Modbus registers. This can be done using any Modbus
master (flow computer, PLC, PC). Configuration software, providing a visual interface to the registers, is available
through your Emerson local business partner or the Fisher website.
Modbus setup
Use the instructions in the instruction manual for the Modbus master to initiate the connection. The D4 with
easyDrive electric actuator Modbus factory defaults are Address 1, 9600 baud, even parity, 1 stop bit.
When a connection has been achieved, the actuator may be configured to accept the input signal over the Modbus
link (ignoring the physical inputs) and the Modbus settings may be changed to accommodate the network to which it
is attached. Other changes to functionality are possible, such as:
D Low level cutoff: 40037 (default is 5%)
D Position upon loss of signal: 40035 (default is 0%)
See Appendix A for a full map of Modbus registers and their functions.
Figure 8. Fisher easy-Drive Configuration Software
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