Appendix D—Modbus Register Map
Power Xpert C445 Global Motor Management Relay
MN042003EN—January 2019
www.eaton.com
331
724
Comm Idle Output Action
BYTE RW NV
Default: 0
Bitfield
Config CRC
Admin Lock
USB Lock
Backup Mem
When a communication idle state occurs the relays can execute two
types of behavior. Only valid for output relays used as general purpose
field outputs. The behavior is selected on a per bit basis. See the Comm
Idle Behavior parameter to set the behavior of outputs used in the control
profile. Each available output is assigned a bit in the Comm Idle Output
Action word. If the bit is “0” then the state of the output is determined by
the (Comm Idle Output State) Parameter. If the bit is “1” it will hold last
state.
725
Comm Idle Output State
BYTE RW NV
Default: 0
Bitfield
Config CRC
Admin Lock
USB Lock
Backup Mem
This parameters works with the Comm Idle Output Action parameter. Only
if that parameter is set to “Use Idle State” does this parameter apply. This
parameter then selects the state of the outputs, On or Off when a
communication Idle occurs. The behavior is selected on a per bit basis.
Only valid for output relays used as general purpose field outputs.
726
Q3 Latch Behavior Power
Down
UINT8 RW NV
Default: 0
Enum
Config CRC
Admin Lock
USB Lock
Backup Mem
Select the behavior of the Latching Relay (Output 3) when power is
removed from the C445, provided the Base Control Module was ordered
with the latching relay option. Default: Turn Off, emulating a non-latching
relay.
727
Phase Type
UINT8 RW NV
Default: 0
Enum
Config CRC
Run Lock
Admin Lock
USB Lock
Backup Mem
Three-phase configuration is the default and is used for 3-phase motors.
The C445 also supports single phase motors by changing this setting to
Single Phase.
Table 128. C445 Modbus Register Map, continued
Register
Name
Attribute
Description
Bit
Description
Coil
0
Communication idle action for Field Output
Control Word. Bit 0: (0) Use idle state
(1) Hold Last
11569
1
Communication idle action for Field Output
Control Word. Bit 1: (0) Use idle state
(1) Hold Last
11570
2
Communication idle action for Field Output
Control Word. Bit 2: (0) Use idle state
(1) Hold Last
11571
3
Communication idle action for Field Output
Control Word. Bit 3: (0) Use idle state
(1) Hold Last
11572
Bit
Description
Coil
0
Communication idle state for Field Output
Control Word. Bit 0: (0) Off (1) On
11585
1
Communication idle state for Field Output
Control Word. Bit 1: (0) Off (1) On
11586
2
Communication idle state for Field Output
Control Word. Bit 2: (0) Off (1) On
11587
3
Communication idle state for Field Output
Control Word. Bit 3: (0) Off (1) On
11588
Value
Description
0
Turn off (emulate a non-latching relay [reset]) (default)
1
Turn on (set)
2
Do nothing (maintain present state)
3
Toggle
Value
Description
0
Three phase wire configuration
1
Single phase wire configuration (two wire)