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TIDA-060008: Not seeing A/B output from RS485 Transceiver

Part Number: TIDA-060008

Not getting any output from RS485 Transceiver, but I do see input on D (Pin 4) of the Transceiver.  Not sure of utility of the DIN1 and DIN2 jumpers and the need for the Multivibrator.

Any help is appreciated to get a basic circuit working.

I do believe that the RS485 device that I am trying to comm to is Full Duplex, and I have verified that a off-shelf 232-485 converter is talking to the device fine.  Just not this circuit.

Thank for any help.  Or even a more simple circuit that might be more reliable.  I liked this one originally due to the isolation.