NB3700 User Manual 3.8
Note: A negative input voltage is not recognized.
Pin Assignment M12 8-pole A-coded female
Pin Signal Pinning
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 3.12.: Pin Assignments of Digital Inputs and Outputs
3.3.6. RS-232 Port
The RS-232 port (if present)has the following specification:
Feature Specification
Protocol 3-wire RS-232: GND, TXD, RXD
Baud rate 300, 1 200, 2 400, 4 800, 9 600, 19 200,
38 400, 57 600, 115 200
Data bits 7 bit, 8 bit
Parity none, odd, even
Stop bits 1, 2
Software flow control None, XON/XOFF
Hardware flow control None
Table 3.13.: RS-232 Port Specification
Pin Assignment M12, 4 poles, D-coded female
Pin Signal Pinning
1 GND
19
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