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DELTA DOC CENTER
26
8. COMMUNICATION INTERFACE
The UPS provides
RS-232
and
Dry contact
protocols in one D-sub 9 connector. Using
proper UPS management software and cable, the UPS can be managed over
LAN/intranet/internet environment. The pin assignment of the D-sub 9 connector is
defined as follows:
ASSIGNMENT DESCRIPTION
PIN
RS-232 Dry Contact
1 Low battery(Open collector)
2 UPS TxD(typical RS-232 level)
3 UPS RxD(typical RS-232 level) Remote shutdown(5~12V)
4 Reserved for PNP
5 GND GND
6 Reserved for PNP Reserved
7 Reserved for PNP Reserved
8 Utility Fail(Open collector)
9
Fig 8-1 Pin Assignment Fig 8-2 Open Collector Circuit
Maximum voltage and current on pin 1,8 is 30VDC, 10mA.
8-1 RS-232
Pin2 : PC receives line
RS-232
data from UPS.
Pin3 : PC transmits line
RS-232
data to UPS.
Pin5 : Signal ground.
Pin4,6,7 : Reversed for plug and play function.
12345
6789
GND
Open Collector
SHEET 27 TO 28