Hello Everyone,
I am developing design to have remote data acqusition monitoring system. There is lots of parameter we will monitor i.e strain, temperature, force etc etc.. Some of sensor I selected is having option of RS 485 as output and some as voltage and current output.
RS 485 is having addition benefit that i can connect more devices through different ID. So i am speculating it will be great to have all my sensor output as RS 485 and then i connect all of them to one RS 485 cable for long transmission of around 500 meters. For this i will have to convert Voltage and current output sensors in RS 485.
If any body did this before then please help me on the points as written below:
1) Do the RS 485 converter (Two terminal voltage o/p to RS 485 signal) is having all info required to put it on one transmission line with other sensor having default RS 485 signal out ? i.e ID assign, Baud rate etc etc
2) if i am using cRIO then must be these serial communication will be configured through FPGA not through VISA.. How difficult it will be to design FPGA compile VI through it ? I mean to how it differs from voltage I/O module's FPGA design ?
Just to conclude it, i want to have remote data acqusition system of 120 i/o, approx 1 km data transfer of low voltage & real time with use of cRIO and serial communication.
NOTE: I m using LabVIEW 8.5 development suite. The cRIO modules will be connected to PC through TCP/IP.
Thanks for your time and Support !
