Configuration Registers - rotork Modbus IQ Pro Technical Manual

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 setting designed to meet the most common requirements for the actuator. If these
are not suitable for a particular application then by using a Modbus communication tool the values can
be changed.
The Modbus Module contains 20 configurable parameter registers; with the IQ and IQT actuator some
of these can be altered by using the infra-red 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, including selecting a different operating data base.
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
Action on Loss of
Communications
Limited Range Position
Minimum
Limited Range Position
Maximum
Deadband 
Motion Inhibit Time
Aux Input Mask
Communications Lost
Position
Hysteresis 
Slow Mode Range
Value/Range
0 = Nothing (No Action)
1 = Open
3 = Close
5 = Stop
7 = Position
Any other value = Off
0 – 100%
0000 – 0064 hex
0 – 100%
0000 – 0064 hex
0.0 – 25.5% 
0000 – 00FF hex
0 – 255 sec
0000 –00FF hex
0 – 255
0000 – 00FF hex
0 – 100%
0000 – 0064 hex
0.0 – 25.5%
0000 – 00FF hex
0 – 100%
0000 – 0064 hex
Publication PUB091-003-00_0119
Configuration Registers
Default Location
Value (Register)
0 = Nothing 7
(0000 hex)
0% 8
0000
100% 9
0064 hex
5.0% 10
0032 hex
5 sec 11
0005 hex
15 12
000F hex
0% 13
0000 hex
2.0% 14
0014 hex
5% 15
0005 hex
R/W Access
03 06 16
03 06 16
03 06 16
03 06 16
03 06 16
03 06 16
03 06 16
03 06 16
03 06 16
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