ICP DAS USA I-8437 Setup guide

Classification
ISaGRAF English FAQ-040
Author
Chun Tsai
Version
1.0.0
Date
Aug. 2007
Page
1 / 2
ICP DAS Co., Ltd. Technical Document
Setting I-8437/I-8837/I-8437-80/I-8837-80 's COM3 as Modbus RTU
Slave port
ANS:
I-8437/I-8837/I-8437-80/I-8837-80 's COM3 supports Modbus RTU slave protocol by user define since
the I-8xx7 driver version of 3.14.
Please visit the ISaGRAF Download Center to get the latest version of PAC driver.
https://www.icpdas.com/en/download/index.php?nation=US&kind1=&model=&kw=isagraf
double-click on the "New Driver For I-8xx7, 7188EG/XG & W-8xx7"
To set I-8437/I-8837/I-8437-80/I-8837-80’s COM3 as Modbus RTU slave port, first power off the PAC.
Then press in and hold in the first two buttons on the front panel of the PAC and then power back up the
PAC system as shown below.
"SEL 1" is to set second Modbus RTU slave port baud rate. I-8417/I-8817’s COM2 and I-8437/I-8837/
I-8437-80/I-8837-80’s COM3 is second Modbus RTU slave port. Press the "OK" button (third button on
the panel), and the "BAU x" setting will appear.

Classification
ISaGRAF English FAQ-040
Author
Chun Tsai
Version
1.0.0
Date
Aug. 2007
Page
2 / 2
ICP DAS Co., Ltd. Technical Document
You can now change the baud rate setting by pressing the "UP" or "Down" button to the desired baud
rate setting.
The settings for the baud rate are as follows:
(-) Disable COM (0) 1200, (1) 2400, (2) 4800, (3) 9600, (4) 19200,
(5) 38400, (6) 57600, (7) 115200, (8) 300 & (9) 600.
Press “OK” to save the selected setting. And then press some “Cancel” to exit the hardware setting.
I-8437/I-8837/I-8437-80/I-8837-80’s COM3 can be set to use "bus7000" or "Fbus" when the baud rate
set to "(-) Disable COM"
Click the link for more ISaGRAF FAQ:
http://www.icpdas.com/en/faq/index.php?kind=280#751