Specifications

FWMurphy – AS731 / AS732 installation section A: panel installation and wiring mi6128 revision G 10
th
Sept 2007 p6/6
Communication ports
RS232 communication
To the right of terminal block 1 – 30, an RJ11 telephone
type connector enables RS232 communication between the
Autostart and a PC running Murphy software AS7CN.
Before connection of this port, the negative DC supply
terminal (pin 1) MUST be connected to ground/earth.
WARNING: failure to connect pin 1 to
negative DC / ground may result in damage
to the Autostart, PC or laptop.
The PC may be connected to the port ‘locally’ via a short
serial (null-modem) lead such a Murphy model AS7CP,
or ‘remotely’ using modems and the telephone network.
RS485 MODBUS communication
Model AS732 has two additional RJ45 connectors for
RS485 communications, located at the top right of the rear
facia (above the RS232 port).
Inter-module RS485 communication is by daisy chaining
units using RJ45 terminated 100BaseT Ethernet leads
(CAT5E cable is recommended). A network terminator
module (supplied with each unit) should be inserted into
any unused ports (on those units at either end of the
RS485 network).
For full details about the connection and operation of the
communication systems and PC software, please refer to
document reference mi6131.
ELECTRICAL CONNECTION (cont.)
Communication networks
AS731/732
A
S731/732
AS732
AS732 AS732
AS732
Generator Site Generator Site
Remote Control Site
Modem CommunicationsLocal Communications
Software
AS7CN
PC with
internal modem
PC with
COM port
PC COM port
AS7CQ
optional 9 way to 25 way adaptor
(for use with 25 way PC COM ports)
Software
AS7CN
Software
AS7CN
AS7CP null modem
(RS232) lead,
RJ11 - 9 way D type
RS232 port (all units) RS232 port (all units)
RS485 ports
(AS732 only)
RS485 ports
(AS732 only)
RS485 lead
(100BaseT
Ethernet,
RJ45 - RJ45,
CAT5 cable)
RS485 lead
(100BaseT
Ethernet,
RJ45 - RJ45,
CAT5 cable)
RS232 Hayes AT compatible
modem, DC powered
(not supplied by Murphy)
external modem,
RS232 Hayes AT compatible
(not supplied by Murphy)
Public Switched
Telephone Network
PC
PC
PC
A
S7CR RS232 modem lead,
RJ11 to 25 way D-type
PC - modem lead
(not supplied by Murphy)
Negative DC
must be connected
to ground/earth
+
–
Negative DC
must be connected
to ground/earth
+
–
1
1
1 1
1
13
3
3 3
3
3
FRANK W. MURPHY LTD.
Church Rd, Laverstock,
Salisbury, SP1 1QZ, United Kingdom
tel: [phone]
fax: [phone]
email: [e-mail]
web: www.fwmurphy.co.uk
FW MURPHY
PO Box 470248
Tulsa, Oklahoma 74147, USA
tel: [phone]
fax: [phone]
email: [e-mail]
web: www.fwmurphy.com
In order to consistently bring you the highest quality, full featured products, we reserve the right to change our specifications and designs at any time.
MURPHY, the Murphy logo, are registered and/or common law trademarks of Murphy Industries, Inc. This document, including
textual matter and illustrations, is copyright protected by Frank W Murphy Ltd., with all rights reserved. © 2007 Frank W Murphy Ltd.
Product Discontinued