Vega NB-13 / User Manual
10
Revision 06 of 24 January 2022
CONTACTS
Contacts description is in the table below.
Contact
Naming on the board
Description
1
GND
Ground
2
ALARM1
Security input 1
3
GND
Ground
4
ALARM2
Security input 2
5
GND
Ground
6
ONE_WIRE
Interface 1-Wire
7
RS485_A
Interface RS-485 A
8
RS485_B
Interface RS-485 B
9
RS232Tx
Interface RS-232 Tx
10
RS232Rx
Interface RS-232 Rx
11
+8V
Output power 8 V for external devices
12
GND
Ground
13
+VPWR
External power 5…55 V
14
GND
Ground
RS-232 and RS-485 interface can not be used at the same time. You can change one
interface to other through Vega NB-IoT Configurator application.
ModBus device can be connected both via RS-485 and RS-232 interfaces. Below is a
connection diagram. To equalize the signal levels when connecting, it is necessary to connect