Any one know what these exceptions mean? My system runs fine for minutes or hours, and when I sometimes when writing to one of the slaves, the whole network crashes (but the device is able to get that data and successfully writes it to its register), All the devices have to be rebooted, but not the mango master, to communicate again.
All my slaves are Isquare Istat6 thermostats. I have 6 units, each in a separate building, Each building has a BB-Electronics Optoisolator/Repeater (485OPDR-HS / line bias on units disabled on the network side, enabled on the side connected to the istat). I have line bias in the system running Mango (470 ohm resistors to 5v and ground), and 120 ohm termination resistors at each end. Line length is about 300 meters. Twisted pair with ground.
Cannot figure out why the network stops working. When it does, the light that blinks when receiving data on the RS485/RS232 converter stops blinking and just stays on. Converter is a CommFront RS232/RS485 optoisolated converter.
What do the exception codes mean? Anyone have ideas on this issue? I've spent weeks trying to figure this out and I'll get it working for an entire day, but the next morning, I write to a slave and the network dies. This is killing me!
Any info would be greatly appreciated!!