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4.1.2 5 way plug‐in terminal block (RS485 models)
A 5 way plug‐in terminal block connector shared with RS485 bus, as shown and described below,
supplies and controls the D.C. power to the modem.
The supply voltage, VCC, required by the modem is in the range of 6.5 to 40VDC. We recommend a
12VDC power supply. The power supply has to be a single voltage source capable of providing a peak
during an active transmission. The uplink burst causes strong ripples (drop) on the power lines.
By default, the MTX‐3G‐JAVA‐RS485 will automatically switch on when power supply is applied at PIN
4 and PIN 5.
Pin
Signal
‐RxB
1
+RxA
2
AUTO ON
3
4
VIN
5
GND
www.mtx‐terminals.com
Direction
Limits
I/O
I/O
Input
0‐VIN
Input
6.5‐40VDC Positive power input
Input
www.mtxm2m.com
MTX M2M® by MATRIX ELECTRONICA S.L.U
MTX‐3G‐JAVA Family
Description
RS485 B signal (see section 4.5 for details)
RS485 A signal (see section 4.5 for details)
Automatic Restart after Shutdown Enable Signal
Negative power (ground)
2015/10 v1.6
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