Perle Systems RIO 5500036-17 - Manual (Page 180)

RIO Remote I/O System User Guide
Installing a Long Distance Module (LDM)
Page 180
Chapter 2 Installing hardware and software
Installing a long distance LDM link via Modem and leased line
To install a long distance LDM link via modem and leased line proceed as follows;
1. Follow the procedure given in given in Installation on page 179 .
2. Connect the modem which you use for the host card site to a PC and configure as follows;
a. Set the autodial number you want using the AT command set. See modem user
documentation for details.
b. Configure the modem as shown in the next table;
c. Save the settings you have chosen.
d. Turn off the power to the modem and remove the power and PC connections.
3. Connect the modem which you use for the remote site to a PC and set the modem to auto
answer mode. See modem user documentation for details.
4. Configure the general modem settings to the same values as the host cards site modem
as step 2. , sub step b. previously.
5. Save the settings you have chosen.
6. Turn off the power to the modem and remove the power and PC connections.
Note
The modem you use for this type of installation should have an autodial facility. That
is the ability to pre-configure the unit to dial a specified number upon powering up.
Mode Parameter Setting
Synchronous Minimum speed 14.4 Kbit/s
Maximum speed 64Kbit/s
Port setting 8 data bits
Flow control Disabled
Command echo Disabled
Display of result codes Suppressed
Asynchronous Specification V32bis minimum
Minimum speed Modems must connect at a
minimum of 9600 baud
Port settings 8 data bits, 1 stop bit and no
parity
Hardware flow control Enabled
Command echo Disabled
Display of result codes Suppressed