Isolated Inputs
The isolated digital input ports have the following specification:
Feature
Number of inputs
maximum input voltage
Minimum voltage for level 1
(set)
Maximum voltage for level 0
(not set)
Table 3.10.: Isolated Digital Inputs Specification
Note: A negative input voltage is not recognized.
Pin Assignment M12 8-pole A-coded female
Pin Signal
1
DI1+
2
DI1
3
DI2+
4
DI2
5
DO1: Dry contact relay normally open
6
DO1: Dry contact relay normally open
7
DO2: Dry contact relay normally closed
8
DO2: Dry contact relay normally closed
Table 3.11.: Pin Assignments of Digital Inputs and Outputs
3.3.6. Extension Connector
The NB3710 has an M12 extension connector with 8 pins. The 8 pins are split into two
logical ports: Pins 1 to 4 represent Extension Port 1 (EP1) and pin 5 to 8 represent
Extension Port 2 (EP2). In common, EP1 hosts the serial line of the router, which is a
non-isolated 3-wire RS-232. On EP2 the following interfaces may be present:
• Audio (Option A)
• CAN (Option C)
NB3710 User Manual 3.8
Specification
2
40 V
DC
7.2 V
DC
5.0 V
DC
18
Pinning
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