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4.5 RS485 bus
A terminal block with a 5‐way connector and shared Power Section, as shown and described below,
is used to implement the RS485 interface
The RS485 bus is connected to the modem's ASC1 port using a level shifter converter.
It meets or exceeds the requirements of ANSI TIA/EIA‐485‐A.
Pin
Signal
‐RxB
1
+RxA
2
AUTO ON
3
4
VIN
5
GND
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Direction
Limits
I/O
I/O
Input
0‐VIN
Input
6.5‐40VDC Positive power input
Input
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MTX M2M® by MATRIX ELECTRONICA S.L.U
MTX‐3G‐JAVA Family
Description
RS485 B signal
RS485 A signal
Automatic Restart after Shutdown Enable Signal
Negative power (ground)
2015/10 v1.6
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