Power Supply User Manual

TOSHIBA
4.2.2 RS-232C
The RS-232C serial communication interface is available via a DB9 female connector located
under the Remote Eye Cover on the front of the UPS (see Section 4 for location). This interface
allows control of the UPS from a personal computer running special TOSHIBA software. The
computer and the UPS are connected through a serial RS-232C communication port. The
available data from the UPS, via the RS-232C communication link is shown below.
Operating Conditions
Input Voltage
Output Voltage
Output Current
Battery Voltage
Input Frequency
Output Frequency
UPS Operating Status
(Described as Yes or No)
Utility Power OK
Low Battery Voltage Detected
UPS in BYPASS Mode
UPS in NORMAL Mode
Input and Output Frequency Synchronized
UPD FAULT Occurred
Fault Details
(Described as Occurred or Not Occurred)
DC Bus Over-Current
DC Bus Over-Voltage
DC Bus Under-Voltage
Input Over-Current
Overheat
Overload Being Timed
Overload (allowable time exceeded)
Output Over-Voltage (during Normal Mode)
Output Under-Voltage (during Normal Mode)
The connector pin assignment and female connector outline are illustrated below.
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
DB9 Female connector outline
(facing connector)
54321
9876
4.2.3 UPS Shutdown (via RS-232C)
When the UPS is operating from its internal batteries, a Shutdown order can be sent to the
UPS telling 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 RS232 screen.
26 4200FA User’s Manual