Instruction Manual

Instruction Manual
D103460X012
D3 Valve with easy-Drive Actuator
November 2013
33
A.3.23 40032 Valve Type [Read & Write]
Register: 40032, Address 0x001F (31).
Function code: 0x10 Write Multiple registers,
0x06 Write Single register, or
0x03 Read Holding registers.
Description: This is a register that holds an enumeration of the three types of valve. This is used to set up
several internal variables and constants. Writes outside of the legal range 0-2 will be rejected
with an exception code.
A.3.24 40033 Control Type [Read Only]
Register: 40033, Address 0x0020 (32).
Function code: 0x03 Read Holding registers.
Description: This is a register that holds an enumeration of the control type either 0 for On/Off, or 1 for
proportional control.
A.3.25 40034 Control Sou rce [Read & Write]
Register: 40034, Address 0x0021 (33).
Function code: 0x10 Write Multiple registers,
0x06 Write Single register, or
0x03 Read Holding registers.
Description: This is a register that holds an enumeration of the control source either 0 for Modbus RTU
control, or 1 for signals local to the system decided by the contents of register 40032. Note
that if the Modbus serial link is not the active mode then the faults associated with serial
communications will be disabled, although serial communications for such activities as test and
debug monitoring of the analog input will all still function. Writes outside of the legal range
0-1 will be rejected with an exception code.
A.3.26 40035 Loss of Control Default Position [Read & Write]
Register: 40035, Address 0x0022 (34).
Function code: 0x10 Write Multiple registers,
0x06 Write Single register, or
0x03 Read Holding registers.
Description: This is a register that holds a position demand 0-100% that will be applied to the position
control loop if the active control source is determined to be corrupt of out of normal
operatingspecification,thisappliestomodbuscommunicationsmessagesbeingabsentor
the analog input being un-calibrated or below 3mA/0.75V(open control loop). Writes outside
ofthelegalrange0-100willberejected with an exception code.
A.3.27 40036 Deadband [Read & Write]
Register: 40036, Address 0x0023 (35).
Function code: 0x10 Write Multiple registers,
0x06 Write Single register, or
0x03 Read Holding registers.
Description: This is a register that holds an integer value of percentage hysteresis used to discriminate
against noise entering the control system from the selected control source, this can take a value
of 0-100%, e.g. a value of 100 would make the system only respond to 0 or 100% demands.
Writes outside of the legal range 0-100 will be rejected with an exception code.