Date Code 20010719
701 Motor Protection Relay
ASCII Serial Port Operation
Connect Your PC to the Relay
6.3
Connect Your PC to the Relay
Connect your PC serial port to the SEL-701 Relay serial port using a cable having
the pinout shown in
or a null-modem cable. This and other cables are
available from SEL. Use SEL-5801 Cable SEL
ECTOR
software to select an appropriate
cable for another application. This software is available for download free from the
SEL web site at www.selinc.com.
NOTE:
If you use a null-modem cable connection to the relay
EIA-232 serial port, be aware that the relay does not use the
DTR and DSR signals. If your communication device requires
these signals, please use a cable wired as shown in
For best performance, SEL Cable C234A should not be more than 50 feet
(15 meters) long. For communications up to 500 meters and for electrical isolation of
communications ports, use the SEL-2800 family of fiber-optic transceivers. Contact
SEL for more details on these devices.
Figure 6.1
Cable C234A Pinout.
Figure 6.2
DB-9 Connector Pinout for EIA-232 Serial Ports.
SEL-701 Relay
9-Pin DTE* Device
9-Pin Male
"D" Subconnector
9-Pin Female
"D" Subconnector
*DTE = Data Terminal Equipment (Computer, Terminal, etc.)
2
3
5
8
3
2
5
8
7
RXD
TXD
GND
CTS
TXD
RXD
GND
CTS
RTS
DCD
DTR
DSR
1
4
6
Pin
Func.
Pin
#
Pin
#
Pin
Func.
Female Chassis Connector, as Viewed From Outside Panel
9
8
7
6
5
4
3
2
1
Summary of Contents for SEL-701
Page 12: ...This page intentionally left blank ...
Page 18: ...This page intentionally left blank ...
Page 20: ...This page intentionally left blank ...
Page 36: ...This page intentionally left blank ...
Page 64: ...This page intentionally left blank ...
Page 144: ...This page intentionally left blank ...
Page 198: ...This page intentionally left blank ...
Page 232: ...This page intentionally left blank ...
Page 246: ...This page intentionally left blank ...
Page 346: ...This page intentionally left blank ...
Page 390: ...This page intentionally left blank ...
Page 408: ...This page intentionally left blank ...
Page 410: ......
Page 412: ......
Page 414: ......
Page 416: ......
Page 418: ......
Page 420: ......
Page 422: ......
Page 424: ......
Page 426: ......
Page 428: ......
Page 430: ......
Page 432: ......
Page 434: ......
Page 436: ......
Page 438: ......
Page 440: ......
Page 442: ......
Page 452: ...This page intentionally left blank ...