Toshiba T1 User Manual
In Touch With Tomorrow
Adap
Programmable Controllers
TOSHIBA INTERNATIONAL CORPORATION
13131 West Little York Road
Houston, TX 77041
PH. 800 231- 1412, 713-466-0277 FAX 713-466-8773
E-Mail plc@tic.toshiba.com
MODEM COM MUNICATIONS WITH THE T1 AND T2E/T2N
March 1998
USING T-PDS WINDOWS FOR DIAL–UP COMMUNICATIONS WITH TOSHIBA
T1 AND T2E/T2N PROGRAMMING PORT
Master Computer
T2E/T2N PLC
Modem
Telephone
Line
Different
Ph. Numbers
Stored in T-PDS
Software
Telephone
Line
Modem
Modem
w/Null
Modem
ter
RS232
RS232
T1/T1S PLC
T1
T1
T1T1
Toshiba PLC users can expand their remote diagnostics and remote programming capabilities
by using Hayes compatible modem communications over the Public Switched Telephone
Network with standard analog phone lines and standard modems. Please note that “analog” line
means a normal dial-in dial–out phone line similar to the ones that you have at home (i.e., about
48Vdc open circuit voltage with about 110Vac ring voltage). This does
phone lines in
most offices
that use modern digital PBX systems. Plugging a modem directly into
not
include the digital
one of these digital office lines may destroy the modem.
We used US Robotics 56K Sportster external modems for our tests, but just about any external
Hayes compatible modem will work. Here is the list of equipment that you need for modem
communications with the PLC’s programming ports:
Accessories For T2E/T2N Modem Communications (with programming port):
PC Side
• a ≥ 9600 baud external modem.
PLC Side
:
• a standard “straight-through” 9-25 pin RS-232 serial cable
:
• a standard “straight-through” 9-25 pin RS-232 serial cable
• a ≥9600 baud external modem.
See Note 1 on page 5
Accessories For T1 Modem Communications (with programming port):
PC Side
PLC Side
See Note 2 on page 5
Now that we have discussed the basic hardware requirements, let’s look at the parameter settings
in T-PDS and the PLCs. We will need to use the Computer Link connection when communicating
via modem, as the “Direct” connection will not work.
note; see the last page for more details. There are 3 Setup Steps:
:
• a standard “straight-through” 9-25 pin RS-232 serial cable;
• a ≥ 9600 baud external modem.
:
• a standard “straight–through” 9-25 pin RS-232 serial cable;
• a “null-modem” adapter such as Radio Shack’s 9-9 pin Null Modem
• a Toshiba part number TKRS232T1 T1 programming cable
• a ≥ 9600 baud external modem.
T-PDS version 1.2
is used in this application
STEP 1: CONFIGURE THE PLC
First, let’s set up the PLC’s Computer Link parameters. Go
the normal “Direct” method. We will need to open the System Parameters screen as shown below:
Online
with the T1 or T2E/T2N using
Page 2
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