User Manual

Quatech QTM-8524 Manual 43
5.4 Asynchronous Communication (Mode 3)
RS-232
RS-232
QTM-8524
QTM-8524
PLC
QTM-8524 Configuration:
Interface: RS-232
Full Duplex
Asynchronous
Master
Baudrate: up to 14.4 kbps
QTM-8524 Configuration:
Interface: RS-232
Full Duplex
Asynchronous
Slave
Baudrate: up to 14.4 kbps
Figure 5.4--QTM-8524 modules in an asynchronous network
Figure 5.4 above depicts a basic asynchronous communica-
tion application. In this type of application, both QTM-8524
modules must be configured for Full-Duplex RS-232 commu-
nication, and they must operate at the same frequency. Baud
rate need not be the same for both modules, however it must
be less than 14.4 kbps. Note that asynchronous mode can not
be used with QTM-8000 Series I/O Modules.