3. Installation
45
Figure 3-27 indicates how the AL-1763 connection terminals should be connected in the device
terminals.
Figure 3-27. Connection Diagram of the COM 2 with RS-485 with Internal Termination
Diagram Note:
The unconnected pins must be insulated so there is no contact between them.
RS-485 Communication with External Termination
In order to connect the Hadron Xtorm CPU to a RS-485 network through the external termiantion of
the COM 2 interface, the identified terminals of the AL-1763 cable must be connected in the
respective device terminals, as shown in Table 3-14.
AL-1763 Pins
CPU Signals
0
Shield
1
Not connected
2
D+
3
D+
4
0 V
5
+5 V
6
Not connected
7
D-
8
D-
Table 3-14. Connection of the COM 2 with RS-485 with External Termination
