In RS-530, the DTE serializes data bits, and the DCE doesn't restrict the bit sequence. Communication is binary, serial, and synchronous or asynchronous. Control information travels on separate circuits. You can send data at half- or full-duplex, and point-to-point or multipoint, over 2- or 4-wire cable.
Note:
General:Cable Construction: Beige PVC
Conductor Gauge: 24 AWG (7 x 32 AWG)
Connectors: (2) DB25 (specify male or female)
Distance (Maximum): Per RS-530 specifications
Hoods: Black plastic
Mutual Capacitance: 12 pF/ft.
Outside Diameter: 0.430"
Resistance: 25 ohms/1000 ft.
Shield: Foil with a drain wire