Technical Note #623
SIXNET • 331 Ushers Rd. • Clifton Park, NY 12065 USA • +1 (518) 877-5173 • FAX +1 (518) 877-8346 • [email protected]
TN623.DOC PAGE
1 of 9
REV: APRIL 2002
VT-MODEM Interfaces with the Allen-Bradley MicroLogix 1500 PLC using
Rockwell’s RSLogix 500 & RSLINX Lite Software
Abstract:
The information in this document was provided by
Rock Interface Systems, Inc
. It
explains the procedure for interfacing a SIXNET Industrial Telephone Modem with an AB
MicroLogix 1500 controller and a computer running the Rockwell RSLogix 500
programming software and the RSLINX communication software. This setup will allow a
remote computer to go on-line with a MicroLogix via a telephone modem connection.
Hardware and Software Used:
·
SIXNET Industrial Modem (Part Number: VT-MODEM-1US)
·
Serial cable (Part Number: VT-CABLE-MDM) (Incl. with VT-MODEM-1US)
·
SIXNET VT-MODEM Setup Wizard v1.15
·
Allen-Bradley MicroLogix 1500 CPU (i.e. 1764-LSP)
·
Allen-Bradley Advanced Interface Converter (i.e. 1761-NET-AIC)
·
Allen-Bradley HHP cable for AIC module to CPU port connection (i.e. 1761-CBL-HM02,
Ser.B)
·
Allen-Bradley cable for PC to Micrologix processor (i.e. 1761-CBL-PM02, Ser.B)
·
Null modem adapter cable
·
Rockwell RSLogix Software v3.01.02.00
·
Rockwell RS LINX Communication Driver v2.10.118.0
·
Internal Modem on PC
·
Analog
phone line connections at both ends (digital lines may not work). The phone line at
the MicroLogix end must also be a direct-dial number from the outside (It is recommended
that if possible the analog line should not be routed through a PBX system).
(Note: The Micrologix 1000 can be used as an alternative to the Micrologix 1500.)
Pin-out of Null Modem Adapter Cable
DB9 Male to Modem
DB9 Male to 1761-CBL-
PM02
CD 1
®
1 CD
RD 2
®
3 RD
TD 3
¬
2 SD
GND 5
5 GND
RTS 7
®
8 CTS
CTS 8
¬
7 RTS
