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rotork Modbus - Configuration Registers

rotork Modbus
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Input and Output Signals
Publication PUB091-004-00_0918 53 of 64
7.8 Configuration Registers
In order to make the best use of the MFU, the module has a number of configurable parameter
registers that may be adjusted to optimise the performance of the actuator. All the parameter registers
have factory default settings designed to meet the most common requirements for the actuator. If
these are not suitable for a particular application, then the values can be changed by using a Modbus
communication tool.
The Modbus Module contains 20 configurable parameter registers and some can be altered by using
the infra-red or Bluetooth communications link and the setting tool. By using a Modbus communication
tool connected to the RS-485 highway all the registers may be reviewed and altered to suit the
particular application for the actuator.
Care must be exercised with access to these parameter registers as they can alter the complete
performance of the actuator.
This section of the manual describes each variable parameter register and should be used for
reference when using the configuration tools. All the registers can be read using function code 03
(Read Holding Registers). The contained values may be altered using function code 06 (Preset Single
Register) or function code 16 (Preset Multiple Registers).
Actuator Related Network Configurable Parameter Registers
Description
Value/Range
Default
Value
Location
(Register)
R/W Access
Action on Loss of Comms
0 = Nothing (No Action)
1 = Open
3 = Close
5 = Stop
7 = Position
Any other value = Off
0 = Nothing
(0000 hex)
7
03
06
16
Limited Range Position
Minimum
0 100%
0000 0064 hex
0%
0000
8
03
06
16
Limited Range Position
Maximum
0 100%
0000 0064 hex
100%
0064 hex
9
03
06
16
Deadband
0.0 25.5%
0000 00FF hex
5.0%
0032 hex
10
03
06
16
Motion Inhibit Time
0 255 sec
0000 00FF hex
5 sec
0005 hex
11
03
06
16
Aux Input Mask
0 255
0000 00FF hex
15
000F hex
12
03
06
16
Comms Lost Position
0 100%
0000 0064 hex
0%
0000 hex
13
03
06
16
Hysteresis
0.0 25.5%
0000 00FF hex
2.0%
0014 hex
14
03
06
16
Slow Mode Range
0 100%
0000 0064 hex
5%
0005 hex
15
03
06
16
Valve Jammed Time
0 255 sec
0000 00FF hex
5 sec
0005 hex
16
03
06
16

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