NB3000-Line-Hd User Manual 4.2
Isolated 3-wire RS-232 Port Specification (Option Sb)
The isolated 3-wire RS-232 port has the following specification (bold characters show the
default configuration):
Feature
Specification
Protocol
3-wire RS-232: GND, TXD, RXD
Baud rate
600,
1 200,
2 400,
4 800,
9 600,
19 200,
38 400, 57 600,
115 200
, 230 400, 460 800,
921 600
Data bits
7 bit,
8 bit
Parity
none
, odd, even
Stop bits
1
, 2
Software flow control
none
, XON/XOFF
Hardware flow control
none
Galvanic isolation to enclosure
1500 V
DC
Max. cable length
10 m
Cable shield
mandatory
Table 3.28.: Isolated RS-232 Port Specification
EP Pins
Signal
1 / 5
GND
2 / 6
TxD
3 / 7
RxD
4 / 8
−
Table 3.29.: Pin Assignments of RS-232 Port Signals (EP1 / EP2)
25
