User`s guide

Modbus Registers
Eaton Power Xpert Gateway PXGX UPS Card User’s Guide 164202123—Rev 1 61
EMP (FC 04)
Note: See “Configuring EMP Settings” on page 34 for more information.
The optional EMP for the UPS can measure temperature and humidity. Because the device can be located
outside the UPS, the reference is to auxiliary data. In addition, it contains two connections for monitoring the
condition of auxiliary input contacts, such as a door switch. See Table 12 for a list of EMP registers.
An exception code is returned if the EMP is not installed.
To read the temperature at the UPS, set the Modbus program to Unit ID 254 and register address 12028:
IP: <IP address of UPS>
Unit ID: 254
Starting Register: 12028
Number of registers: 2
Function Code: 04
Time or Date (FC 04)
Some UPS models support a time and/or date function. This format has a DATE data type and contains six
bytes. Each byte represents the year, month, day, hour, minutes, or seconds (see page 58 for more
information).
To read the UPS date and time, set the Modbus program to Unit ID 1 and register 12203:
IP: <IP address of UPS>
Unit ID: 1
Starting Register: 12203
Number of registers: 3
Function Code: 04
The UPS would return three registers containing hexadecimal data in the ym dh ms format (for example,
May 17, 2007 at 10:45 and 20 seconds).
Viewing each byte in decimal would yield the following data, which is viewable as the year (07), month (05),
day (17), hour (10), minutes (45), and seconds (20):
Viewing each byte as two-byte unsigned integers would yield the following data:
Table 12. EMP Registers (FC 04)
Name Register Data Type Bytes
Vendor Name 1032 STRING 64
Model Name 1064 STRING 64
Display Name 1096 STRING 64
Serial Number 1276 STRING 64
Device ID 1192 STRING 64
Auxiliary Input 1 10275 UINT 2
Auxiliary Input 2 10276 UINT 2
Auxiliary Temperature 12028 FLOAT 4
Auxiliary Humidity 12030 FLOAT 4
07 05 11 0A 2D 14
07 05 17 10 45 20
1797 4362 11540