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RS232 port is a traditional DB9 black plug. The traditional DB9 is equivalent to the ordinary DB9. It is used in AB 1761 series PLC programming and debugging. - The appearance of the PLC side connector is a round head 8-pin right angle 90 degree with positioning notch, which effectively fixes the PLC programming port, and will not interrupt communication due to the shaking of the cable during programming monitoring.
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