Hello Aduong,
There is a KnowledgeBase online which discusses the pinout of the SCXI-1302
here.
However, I'm not sure I understand what you are trying to do with this
device. Are you saying that you'd like to implement EIA-485
communication between the SXCI-1200 and the Eurotherm device? The
SCXI-1200 is a data acquisition device and is not really designed to
perform serial communication. This would be best achieved with the
serial port on a computer or with a plug-in EIA-485 device. I suppose
you could attempt to manually decode and encode serial communication
using a DAQ device, but it may be difficult to strictly adhere to the
EIA-485 specifications.
Matt Anderson
Hardware Services Marketing Manager
National Instruments