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THE CONTINUOUS POWER COMPANY
Page 12
SIGNALS AND INTERFACING
t the rear of the unit are two DB-9,
subminiature, female connectors. These are
provided for communications links to a
computer or sophisticated monitoring device.
SIGNAL PORT DB-9 provides open collector type
closures that typically signal Utility Interrupt, Low
Battery and Inverter Active conditions. A system
shutdown feature is also available on this port.
Applying a +5-12V signal across the appropriate
pins will cause the system to shutdown in battery
mode.
This conserves the battery life once an orderly
shutdown has been accomplished. The system may
be configured to shutdown by simply shorting pins 6
and 7. Contact the factory for configuration details.
RS232 DB-9 is a true RS232 communications signal
port. On rackmount units, this port is on a
removable plate, which can be substituted with an
optional SNMP card. Below is the pin out of the two
connectors with their default assignments:
SIGNAL PORT-(DB9) OPEN COLLECTOR
2- UTILITY INTERRUPTED SIGNAL
3- INVERTER ACTIVE SIGNAL
4- COMMON SIGNAL RETURN
5- LOW BATTERY SIGNAL
6- + UPS SHUTDOWN
7- - UPS SHUTDOWN
RS232 CONNECTOR
2- TRANSMITTING DATA (TX)
3- RECEIVING DATA (RX))
5- GROUND
6- DATA SET READY (DSR)
8- REQUEST TO SEND (RTS)
A