TOSHIBA

6.0UPS Control Interface

6.1DB25 Connector Pinout

RS-232C serial communication and Dry Contacts are both standard features available through a DB25 female connector located on the back panel of the UPS (see Section 9.1). The RS-232C serial communication interface allows control of the UPS from a personal computer running special Toshiba software. The computer is connected to the UPS through a serial RS-232C communication port. The Dry Contact interface is available as open or closed contacts. An adapter is available from Toshiba for splitting the RS-232C and Dry Contact interfaces into two separate DB9 connectors. Contact Toshiba for more information on this option. The following chart shows the pin assignments for the DB25 connector.

RS-232C Serial Interface

Dry Contacts

Pin

Symbol

Description

1

0V

Supply used by Slide-In Options cards (-)

2

+9V

Supply used by Slide-In Options cards (+)

3

RXD_UPS

UPS receive line

4

TXD_UPS

UPS transmit line

5

TXD_AUX

Auxiliary transmit line

6

RXD_AUX

Auxiliary receive line

7

 

(not used)

8

SNMPSIG1

SNMP option card function

9

RS_Common

Common line for RS-232C communication

10

SNMPSIG2

SNMP option card function

11

DTR

UPS data terminal ready

12

DSR

UPS request to send

13

RTS

UPS clear to send

14

CTS

UPS data set ready

15

 

(not used)

16

Dry_Common

Common line for Dry Contact signals

17

Backup_O

Open during Battery Backup

18

Backup_C

Closed during Battery Backup

19

Low_Battery

Closed during Low Battery

20

Inverter

Closed during On-Line mode

21

Bypass

Closed during Bypass mode

22

Fault

Closed during Fault

23

 

(not used)

24

SD_Signal

Shutdown command signal line

25

SD_Common

Shutdown command common line

 

 

 

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Toshiba 1500 Plus manual DB25 Connector Pinout, Pin Symbol Description

1500 Plus specifications

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