Hello,
I am wondering if an A300 power converter can share a control port with a particle profiler sensor I have hooked up to control port 2 on a CR850. I have two SDI sensors hooked up so both control ports are used however I need to use a GPS on my platform so both the GPS unit and the A300 converter will need control ports. Can these 4 units share two ports? if so, how do I assign addresses to them in the program?
Thanks!
The GPS unit needs a pair of control ports. So, you can use C3 and C4 for that.
Change the address on one SDI-12 sensor, so they can share C1. There is a tutorial video that shows how to change the address.
https://www.campbellsci.com/videos/sdi12-sensors-transparent-mode
You can use C2 for the particle sensor.
Hi Thanks for your reply. I have used the terminal emulator already and have an SDI-12 sensor in C1 and actually I made a mistake, this sensor I am asking about is a sensor using the modbus protocol. So we have the GPS unit in C2 and the A300 in C3 and C4. Before the gps unit was installed, I was using C3 and C4 for the modbus sensor because C1 was already used by a smart sensor. The GPS unit was then installed by someone else and now the modbus sensor is not recording values. I believe I will try changing the maximum time difference in the program for the gps because I read that if it is set to 0 then this may cause skipped values written to the table. Unless the GPS (including the A300) unit cannot share C3 and C4 . Then I will have to use a CR1000.
Any advice is appreciated. Thanks!