Huawei AR500 Series Hardware Description page 671

Huawei
AR500&AR510&AR531&AR550&1500&AR2500
Industrial Switch Routers
Hardware Description
Connection
The 5-pin phoenix connector (RS485/RS422) cable can be assembled with cables differently
to provide RS485 or RS422 connection.
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A 5-pin phoenix connector (RS485/RS422) cable is connected as follows:
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6.2.9 5-Pin M12 DC Power Terminal
Description
A 5-pin M12 DC power terminal receives power from two inputs: one input directly from a
power source on the vehicle (constant power supply) and the other input from the ACC circuit
(switch controlled power supply).
NOTE
Either the ACC pin or a positive pole pin needs to be connected to an external power supply to supply power
to the device.
Appearance and Structure
Figure 6-14
Figure 6-14 Structure of a 5-pin M12 DC power terminal
2
3
Pin Assignments
Table 6-28
Table 6-28 Pin assignments of a 5-pin M12 DC power terminal
Connector P1
1
Issue 10 (2019-03-06)
For RS485 connection, insert three cables to the D+, D-, and GND holes on the 5-pin
terminal block.
For RS422 connection, insert five cables to the T+, T-, R+, R-, and GND holes on the 5-
pin terminal block.
The 5-pin terminal block is connected to the RS485/RS422 interface on a router.
The other end is connected to a meter with an RS485 interface or a monitoring terminal
with an RS485/RS422 interface.
shows the structure of a 5-pin M12 DC power terminal.
5
1
2 1
5
3 4
4
P1
lists the pin assignments of a 5-pin M12 DC power terminal.
Copyright © Huawei Technologies Co., Ltd.
-
-
+
+
ACC
P2
Connector P2
-
6 Cables
1
2
3
4
5
660