User Manual

Quatech QTM-8524 Manual 41

5.2 Interfacing with QTM-8000 Modules (Mode 1)

RS-232

RS-485

QTM-8524

QTM-8524 Configuration:

Interface: RS-232

Full Duplex

Synchronous

Master

Baudrate: 19200 bps MAX

Channel: 1

QTM-8524 Configuration:

Interface: RS-485

Full Duplex

Synchronous

Slave

Baudrate: 19200 bps MAX

Channel: 1

Figure 5.2--QTM-8524 as part of a QTM-8000 Series

Data Acquisition and Signal Conditioning Network

QTM-8000 Series

Figure 5.2 above depicts QTM-8000 Series data acquisition and signal con-

ditioning modules integrated into a wireless network. The upstream QTM-

8524 connected to the PC should be set for RS-232 communication, the down-

stream QTM-8524 connected to the module network should be set for RS-

485. Both QTM-8524 modules must be configured for the same frequency,

channel and baud rate. The attached QTM-8000 Series I/O modules must

also be configured at that same baud rate. (Note that because of the speed

limitation imposed by the QTM-8524, communication over this network can

not exceed 19.2 kbps, even though QTM-8000 Series I/O Modules are them-

selves capable of speeds up to 115.2 kbps.) Up to 256 QTM-8000 I/O mod-

ules can be configured in a network using one pair of QTM-8524 modules.