Samsung SCC-643 SCC-643P Setting RS-422A/RS-485termination

Setting RS-422A/RS-485 termination

SW 501

As it is shown in the structure map, when Controller and RS-422A/RS-485 is connected it should be terminated according to the Cable feature of impedance on the each end of the transmitting line to transfer the signals in long distance by controlling the reflection of the signals to the lowest.

Division n < 128

Termination

SW1-ON

<RS-485 Half Duplex Organization>

Termination: using numbers 1 and 2 PIN, turn to ON and it will be terminated.

n < 128

Division

Division SW1-ON SW2-ON

<RS-422A/RS-485 Full Duplex Organization>

1-11