Norco BIS-1280, User Manual

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BIS-1280 User's Manual
5
2.3 Front panel I / O connector
2.3.1 Serial Port
（
COM0
、
COM1
～
COM12
）
BIS-1280 provides 13xRS232/485 serial port
，
13x serial port. The location is shown in
Figure 1.
COM0 is the debugging serial port
，
Table 1 is the interface description of COM0. COM1-4
support 232/485 function
，
COM5-12 support RS-485 function
，
as shown in Figure 2, the silk
screen of com1-12 interface
，
A and B are differential signals of RS-485
，
R and T are shown as
RXD and TXD signal, respectively
，
SG is isolated ground signal.
Figure 1 Serial Port
Table 1 COM0 Port
Pin Signal Name
1 COM0_RX
2 COM0_TX
3 GND
Figure 2 COM1-12 Signal Description