rotork Modbus - Comms Lost Position (Register 13); ESD DI-4;Net Disable (Register 19); Analogue Input Max;Min (Register 20); Comms Fault Timer (Register 21)

Modbus MFU Option Card Installation Manual
58 of 64 Publication PUB091-004-00_0918
Most Significant Bit Least Significant Bit
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
X
7
X
6
X
5
X
4
Y
3
Y
2
Y
1
Y
0
Enable
DI-4
ESD
Enable
DI-3
Stop
Enable
DI-2
Close
Enable
DI-1
Open
Invert
DI-4
Invert
DI-3
Invert
DI-2
Invert
DI-1
Example 1
0
0
0
0
1
1
1
1
Example 2
1
1
1
1
1
1
1
1
Example 3
0
0
0
0
0
0
0
0
 Example 1 The default value of '15' (0000, 1111 binary or 0F hex) makes all 4
inputs report closed contacts as true (1) and none of the inputs will
operate the actuator.
 Example 2 The value 255 (1111,1111 binary or FF hex) makes all 4 inputs report
closed contacts as true (1) and all the inputs control the actuator in
their predefined way.
 Example 3 The value 0 (0000, 0000 binary or 00 hex) makes all 4 inputs report
open contacts as true (1) and none of the inputs will operate the
actuator.
7.9.6 Comms Lost Position (Register 13)
The setting in this parameter register determines the position in the range 0 to 100% that the actuator
will move to if the Modbus network communications stops being received, provided the Fault Mode
(Register 1) is set to 'Position'. No action will be taken unless the communications stops for a period
equal or greater than the setting in the Comms Fault Timer (Register 21).
7.9.7 ESD DI-4/Net Disable (Register 19)
In the IQ3 actuator this input determines the mode of operation for the ESD/DI-4 remote input. The
input can be used either to disable control of the actuator from the network, or to act as an ESD/digital
input. When this setting is made 'Active' the input will disable network control of the actuator when the
contact input is closed, irrespective of the Aux Mask setting.
7.9.8 Analogue Input Max/Min (Register 20)
This parameter register is used when the IQ3 actuator has a Modbus card and an Analogue Input card
fitted. To calibrate the Analogue card, its maximum input is applied and a value of 1 is written to
parameter 20. Then the minimum analogue input is applied and a value of 2 is written to parameter
20. Once this is done, the Analogue card will scale the input from 0 to 1000. The input range must be
set using Insight2, to select voltage or current.
7.9.9 Comms Fault Timer (Register 21)
Parameter register 21, the Comms Fault Timer setting, determines the number of seconds that
network communication must be absent before the setting for the Fault Mode will be carried out. The
values range from 0 to 65 seconds.