Toshiba 4200FA CT, Installation And Operation Manual

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32 4200FA Installation and Operation Manual
DB9 Female connector outline
(facing connector)
5 4 3 2 1
9 8 7 6
The connector pin assignment and female connector outline are illustrated below.
4.5.3 UPS Shutdown (via RS-232C)
When the UPS is operating from its internal batteries, a 'shutdown' order can be sent to the
UPS instructing it to turn OFF after a user-specified amount of time. This function can
allow you to stop discharging the UPS batteries after an orderly system shutdown has
been completed. The UPS can be programmed to turn OFF up to 8 minutes after the
'shutdown' command is given. This command can be cancelled before the specified time
has elapsed by following the directions listed on the RS-232C screen.
Pin I/O Symbol Description
1 This pin is not used
2 Input RXD Receive Data
3 Output TXD Transmit Data
4 Output DTR Data Terminal Ready
5 - SG Signal Ground
6 Input DSR Data Set Ready
7 Output RTS Request To Send
8 Input CTS Clear To Send
9 This pin is not used