Vega SH-2 / User Manual
7
Revision 02
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3 OPERATION
CONTACTS
The modem has 6 pairs of contacts which described in the table below.
Contact
Name on the board
Description
1
COUNT1
Digital input 1
2
COUNT2
Digital input 2
3
GND
Ground
4
GND
Ground
5
ADC1
Analog input
1 (0…21 В)
6
ADC2
Analog input
2 (0…21 В)
7
RS485_A
RS-485 Interface A
8
RS485_B
RS-485 Interface B
9
ONE_WIRE
1-Wire Interface
10
GND
Ground
11
+V_EXT
External power +
12
GND
External power -
Digital inputs COUNT1 and COUNT2 may operate in pulse or security mode. If the
input has not connection
there is a logic ‘1’
.