Nortech NX12 - Wiring Diagram Introduction; Digital Input Wiring

NX12
Micro GSM RTU
© Nortech Management Ltd, United Kingdom
Page 18 of 25
PCB Ref.
Pin
Function
Comment
TB5
1
Not connected
TB5
2
Digital Output #8
TB5
3
Digital Output #7
TB5
4
Digital Output #6
TB5
5
Digital Output #5
TB5
6
Digital Output #4
TB5
7
Digital Output #3
TB5
8
Digital Output #2
TB5
9
Digital Output #1
TB5
10
Common
TB1
1
RS485 TX/RX +ive
TB1
2
RS485 TX/RX -ive
TB1
3
RS485 + wake up
Not implemented
TB1
4
RS485 Ground/Common
PL1
1-6
Programming port
Do not use
H1
1-16
Expansion header
SK1
-
Not used
6.7 Wiring Connection Diagrams
6.7.1 Digital Inputs
Connecting the RTU to a volt-free dry contact input
Input n
Common
RTU Digital
Input Terminals
Equipment
Monitored