Modbus Registers
Eaton Power Xpert Gateway PXGX UPS Card User’s Guide 164202123—Rev 1
60
UPS Alarms (FC 02)
Table 11 provides a partial list of example UPS alarms. Your UPS may have different alarms. UPS alarms are
not registers, but are discrete inputs and are read using FC 01 or FC 02.
The UPS monitors the condition of several parameters and can activate an alarm status if a parameter is out of
range. For example, if the utility power is too high or too low, the UPS can set the Utility Out of Limits alarm.
To read the Utility Out of Limits alarm, set the Modbus program to Unit ID 1 and discrete address 1057:
IP: <IP address of UPS>
Unit ID: 1
Starting Address: 1057
Number of Addresses: 1
Function Code: 02
The UPS returns a BOOL value (0 or 1), indicating if the alarm is active or not active. A return value of 0 (false)
indicates an inactive alarm (the utility input is within limits). A return value of 1 (true) indicates an active alarm
(the utility input is out of limits).
Table 10. UPS Sample Registers (FC 04)
Parameter Name
Display Name
Register
Discrete
Units
Data Type
Bytes
VendorName
Vendor Name
1032
No
No
STRING
64
ModelName
Model Name
1064
No
No
STRING
64
iDisplayName
Display Name
1096
No
No
STRING
64
iDeviceType
Device Type
1128
No
No
STRING
64
iDeviceID
Device ID
1192
No
No
STRING
64
iDeviceGuid
Device GUID
1256
No
No
STRING
40
SerialNumber
Serial Number
1276
No
No
STRING
64
SoftwareVersion
Software Version
1308
No
No
FLOAT
4
mACVoutC
Vcn Output
4050
No
Volts
FLOAT
4
mACVbypassA
Van Bypass
4058
No
Volts
FLOAT
4
mACVbypassB
Vbn Bypass
4060
No
Volts
FLOAT
4
mACVbypassC
Vcn Bypass
4062
No
Volts
FLOAT
4
mDCVbatt
DCV Batt
4377
No
Volts
FLOAT
4
mACIinA
IinA
5022
No
Amperes
FLOAT
4
mACIinB
IinB
5024
No
Amperes
FLOAT
4
mACIinC
IinC
5026
No
Amperes
FLOAT
4
mACIoutA
IoutA
5028
No
Amperes
FLOAT
4
Table 11. UPS Sample Alarms (FC 02)
Parameter Name
Display Name
Address
Discrete
aUtilityOutOfLimits
Utility Out Of Limits
1057
Yes
aInternalCommFail
Internal Communication Failure
1062
Yes
aBattVoltsHigh
Battery Voltage High
1067
Yes
aCheckPowerSupply
Check Power Supply
1069
Yes
aCheckLogicSupply
Check Logic Power Supply
1070
Yes
aHeatsinkOverTemp
Heatsink Over Temperature
1072
Yes
aCheckHeatsinkSensor
Check Heatsink Temperature Sensor
1073
Yes
aRectifier125OverI
Rectifier Current Over 125%
1074
Yes
aInverterOffCommand
Inverter Off Command
1091
Yes
