Ups Control Interface; Db25 Connector Pinout - Toshiba 1500 Plus Series Operation Manual

6.0

UPS Control Interface

6.1

DB25 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.
Pin Symbol
1 0V
2 +9V
3 RXD_UPS
4 TXD_UPS
5 TXD_AUX
6 RXD_AUX
7
8 SNMPSIG1
9 RS_Common
10 SNMPSIG2
11 DTR
12 DSR
13 RTS
14 CTS
15
16 Dry_Common
17 Backup_O
18 Backup_C
19 Low_Battery
20 Inverter
21 Bypass
22 Fault
23
24 SD_Signal
25 SD_Common
Description
Supply used by Slide-In Options cards (-)
Supply used by Slide-In Options cards (+)
UPS receive line
UPS transmit line
Auxiliary transmit line
Auxiliary receive line
(not used)
SNMP option card function
Common line for RS-232C communication
SNMP option card function
UPS data terminal ready
UPS request to send
UPS clear to send
UPS data set ready
(not used)
Common line for Dry Contact signals
Open during Battery Backup
Closed during Battery Backup
Closed during Low Battery
Closed during On-Line mode
Closed during Bypass mode
Closed during Fault
(not used)
Shutdown command signal line
Shutdown command common line
6 - 1