Connection Between Looms And Data Collection Boards (Ltb3) - Toyota JAT710 Installation Manual

4. APPENDIX
4.3.3

Connection between Looms and Data Collection Boards (LTB3)

To introduce the TMS scanner, it is necessary to connect looms to LTB3 boards.
Check if the looms to be monitored allow connection with the LTB3 boards.
[ 1 ] Communication Method between LTB3 Boards and Computer
The data collection board (LTB3) collects the loom parallel monitor signals such as the production
pulse, stop signal and stop cause signal. LTB3 sends the collected data to the TMS scanner PC by
serial communication (RS485).
Loom
Parallel signal
interface
Loom
Parallel signal
interface
Loom
Parallel signal
interface
ATTENTION
For TMS scanner communication, the upstream and downstream cables form one loop.
Star connection using a hub as in the Ethernet is not made. In the TMS scanner, each loop is
called a channel.
126
Parallel monitor signal
LTB3
LTB3
LTB3
Upstream Downstream
TMS scanner PC
Serial communication (RS485)