We have 3 PROXR 32 channel relay cards with RS485 interfaces (no UXP). I will refer to them as 1, 2 and 3. All cards have identical jumper settings in accordance with the documentation. We are using NCD Base Station.
Card 1: First powered up ok and RS485 comms initially seemed ok as we could look at the configuration. However, on “Save”, it seemed to lock up and then no further comms with card 1 was possible.
Card 2: First powered up and able to successfully set the E3C number and change the card’s identity name. Power down/up and card works correctly. Comms OK.
Card 3: First powered up and able to successfully set the E3C number and change the card’s identity name. Power down/up and card works correctly. Comms OK.
Swapped RS485 modules between cards 1 and 2. Card 2 continued to work but card 1 still had problem. Therefore we assume card 1’s RS485 module is OK and problem is on card 1’s PCB.
Documentation refers to making connection between 3.3V and CLR to reset to factory default but 3.3V and CLR are not marked.
Tried the “Hint” in the documentation suggesting moving link between run and program and cycling power but this did not work.
Have you any suggestions please?