Powerware 3115 User Manual page 18

Operation and Configuration
When the communication cable is installed, power management
software can exchange data with the UPS. The software polls the UPS for
detailed information on the status of the power environment. If a power
emergency occurs, the software initiates the saving of all data and an
orderly shutdown of the equipment.
Table 2. Communication Port Configuration
Pin Number Signal Type
1 Input: RS-232 high level signal for >0.4
seconds
2 Output: Open closing to logic ground pin 4
3 Output: Open closing to logic ground pin 4
4 Signal Return
5 Output: RS-232 level low
6 Output: RS-232 level high
7 Not Used
8 Not Used
9 Chassis Ground (connected to pin 4)
12
6 7 8 9
1 2 3 4 5
Figure 8. Communication Port
Function
Conditional Power Off: In absence of AC power, output is
turned off until normal AC power returns
Impending Low Battery: Indicates the battery has less than 2
to 5 minutes of backup time left
AC Input Failure: Indicates absence of normal AC input
Logic Ground
Impending Low Battery: Indicates the battery has less than 2
to 5 minutes of backup time left
AC Input Failure: Indicates absence of normal AC input
Not Used
Not Used
Chassis Ground
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