3. Installation
46
Figure 3-28 indicates how the AL-1763 connection terminals should be connected in the device
terminals.
Figure 3-28. Connection Diagram of the COM 2 with RS-485 with External Termination
Diagram Note:
The unconnected pins must be insulated so there is no contact between them.
RS-422 Communication without Termination
In order to connect the Hadron Xtorm CPU to a RS-422 without termination network through the
COM 2 interface, the identified terminals of the AL-1763 cable must be connected in the respective
device terminals, as shown in Table 3-15.
AL-1763 Pins
CPU Signals
0
Shield
1
Not connected
2
TX+
3
RX+
4
Not connected
5
Not connected
6
Not connected
7
TX-
8
RX-
Table 3-15. Connection of the COM 2 with RS-422 without Termination
