Check the voltage between pins 3 and 4, if the voltage is greater than 5V connect it in the BAD PLUG orientation (pin 11 is rs485A and pin 12 is rs485B)
Check the voltage between pins 3 and 4, if the voltage is greater than 5V connect it in the BAD PLUG orientation (pin 11 is rs485A and pin 12 is rs485B)
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