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3. Installation
42
RS-485 Communication with External Termination
In order to connect the Hadron Xtorm CPU to a RS-485 network through the COM 1 interface
external termination, the identified terminals of the AL-1763 cable must be connected in the
respective device terminals, as shown in Table 3-10.
AL-1763 Pins
CPU Signals
0
Shield
1
Not connected
2
Not connected
3
D-
4
0 V
5
D+
6
Not connected
7
Not connected
8
+ 5 V
Table 3-10. Connection of the COM 1 with RS-485 with External Termination
Figure 3-24 indicates the connection between the AL-1763 pins and the RS-485 network.
Figure 3-24. Connection Diagram of the COM 1 with RS-485 with External Termination
Diagram Note:
The unconnected pins must be insulated so there is no contact between them.