BT200 cannot communicate

2016-06-12View Original

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Why can’t the EJA110A differential pressure transmitter communicate with the BT200? I’ve already added a 250-ohm resistor, but it still doesn’t work for communication...

Reply #22016-06-12

It can communicate with other EJA130 units on the DCS cabinet, but it cannot communicate with EJA110 units; a 250-ohm resistor was also added

Reply #32016-06-12

There’s no need to add a resistor even for DCS. There’s no problem with the voltage transformer, right?

Reply #42016-06-12

It’s been resolved; it was probably a power supply issue – the 24V voltage was a bit low. Connecting it directly to the card will do, as the card outputs 28V

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BT200 cannot communicate

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