3. Installation
27
Figure 3-6. RS-485 Connections with no Termination Diagram
Diagram Note:
The not connected terminal must be insulated so they do not make contact with each other.
RS-485 Communication with Internal Termination
In order to connect in a RS-485 network using the internal termination in COM 1 (NX3004 or
NX3005) or COM 2 (NX3010, NX3020 or NX3030) interface, the cable AL-1763 identified
terminals must be connected in the respective device terminals, as shown on Table 3-7.
Table 3-7. RS-485 Connections with Internal Termination
PS.: The internal termination available in COM 1 (NX3004 and NX3005) or COM 2 (NX3010,
NX3020 and NX3030) is safe state type in open mode.
The Figure 3-7 diagram indicates how the AL-1763 connection terminals should be connected in the
device terminals.
Figure 3-7. RS-485 Connections with Internal Termination Diagram
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General