Appendix D—Modbus Register Map
330
Power Xpert C445 Global Motor Management Relay
MN042003EN—January 2019
www.eaton.com
721
Comm Idle Behavior
UINT8 RW NV
Default: 0
Enum
Config CRC
Admin Lock
USB Lock
Backup Mem
Select the state for the motor when the network system controller is in
communication idle mode (program mode for most PLCs and DCS
controllers).
722
Comm Fault Output Action
BYTE RW NV
Default: 0
Bitfield
Config CRC
Admin Lock
USB Lock
Backup Mem
When a communication fault occurs the relays can execute two types of
behavior. The behavior is selected on a per bit basis. Only valid for output
relays used as general purpose field outputs. See Communication Loss
Behavior parameter to set the behavior of outputs used in the control
profile. Each available output is assigned a bit in the Comm Fault Output
Action word. If the bit is “0” then the state of the output is determined by
the (Comm Fault Output State) Parameter. If the bit is “1” it will hold last
state.
723
Comm Fault Output State
BYTE RW NV
Default: 0
Bitfield
Config CRC
Admin Lock
USB Lock
Backup Mem
This parameters works with the Comm Fault Output Action parameter.
Only if that parameter is set to Use Fault State does this parameter apply.
This parameter then selects the state of the outputs, On or Off when a
communication fault occurs. The behavior is selected on a per bit basis.
Only valid for output relays used as general purpose field outputs.
Table 128. C445 Modbus Register Map, continued
Register
Name
Attribute
Description
Value
Description
0
Stop on idle event
1
Ignore idle and keep present state
2
Send RUN1 command on idle event
3
Send RUN2 command on idle event
Bit
Description
Coil
0
Communication loss action for Field Output
Control Word. Bit 0: (0) Use fault state
(1) Hold Last
11537
1
Communication loss action for Field Output
Control Word. Bit 1: (0) Use fault state
(1) Hold Last
11538
2
Communication loss action for Field Output
Control Word. Bit 2: (0) Use fault state
(1) Hold Last
11539
3
Communication loss action for Field Output
Control Word. Bit 3: (0) Use fault state
(1) Hold Last
11540
Bit
Description
Coil
0
Communication loss action for Field Output
Control Word. Bit 0: (0)Off (1)On
11553
1
Communication loss action for Field Output
Control Word. Bit 1: (0)Off (1)On
11554
2
Communication loss action for Field Output
Control Word. Bit 2: (0)Off (1)On
11555
3
Communication loss action for Field Output
Control Word. Bit 3: (0)Off (1)On
11556