ICP DAS USA LinPAC-22 Series, User Manual

Page: 7 / 31

ICP DAS
LinPAC-52xx Series XV-Board API User Manual
7
Remarks:
[1] Refer to the communication port number in the table below when sending the Modbus
protocol request.
' cPort ’ parameter for the XV-Board module: 1=COM1=/dev/ttyO1.
' cPort ' parameter for the RS-485 serial port: 2=COM2=/dev/ttyO2, 5=COM5=/dev/ttyO5.
Note : Remote I/O modules can be remotely controlled through an RS-485 serial bus. Refer
to Chapter 4.1.2: “ DIO ” for details of demonstration details.
Device Name
Definition in the
LP-22xx/52xx SDK
Description
Default
Baud Rate
-
/dev/ttyO1 or COM1
Used for internal communication with the
XV-Board
115200
- Console port RS-232 (RxD, TxD and GND); Non-isolated 115200
ttyO4 /dev/ttyO4 or COM4 RS-232 (RxD, TxD and GND); Non-isolated 9600
ttyO2 /dev/ttyO2 or COM2 RS-485 (Data+, Data-); Non-isolated 9600
ttyO5
/dev/ttyO5 or COM5
RS-485 (Data+, Data-); 2500 V
DC
isolated 9600
[2] Modbus RTU protocol function codes.
Function Code Description Input
01 Reads the status of the Digital Output 1
02 Reads the status of the Digital Input 2
03 Reads the Analog Output channels 3
04 Reads the Analog Input channels 4
05 Writes to a single Digital Output channel 5
06 Writes to a single Analog Output channel 6
15 Writes to multiple Digital Output channels 15
16 Writes to multiple Analog Output channels 16
[3] This is the input value reference address mapping (Modbus register table) for the ' wAddr '
parameter. More information regarding address mapping can be found at:
http://ftp.icpdas.com.tw/pub/cd/linpac/napdos/lp-5000/lp-52xx/lp-5231/user_manual/xv-boar
d_user_manual_v1.0.3.pdf