Toshiba 1000 Computer and Alarm Connections, 5.1 RS-232 Standard Interface Port, Pin #, Signal

5. Computer and Alarm Connections

At the rear of the UPS is an interface that allows direct communication with a computer system (see figure 2). There is a RS232 serial data interface, a USB data interface, and an emergency power off switch. The RS232 port and the USB interface cannot be used simultaneously.

In addition there is an optional interface slot that allows for the installation of communications cards. It may be used in parallel with either the RS232 or USB ports. An SNMP/WEB card is available for the optional interface slot that allows for the RemotEye II to manage and monitor the system over a network or over the internet.

5.1RS-232 Standard Interface Port

Only the communication cable provided with the UPS may be used to connect the UPS to a computer when using the RS232 port of the UPS. Ensure that the operating system of the computer supports RS232 communications. Other advanced power protection solutions, such as SNMP, are available from your dealer.

The RS-232 interface uses a 9-pin D-sub connector. The names and functions of the port pins are listed in the following table.

		DB9 Female Connector Outline
		(facing connector)
Pin #	Signal	Direction (re UPS)	Functions
2	TxD	Output	TxD Output
3	RxD	Input	RxD / Inverter Off Input
5	Common		Common
6		Output	Ac Fail Output
8		Output	Low Battery Output
9		Output	8–24 VDC Power

Table 1 : RS232 Pin Out Signal

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