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Output of the interface line is shown in Fig. 6. It is required to con-
nect the lines A and B in parallel with their equivalents in other devices
to obtain the correct transmission. The connection must use a shielded
wire. The cable shield should be connected to the protective terminal
in close proximity to the transmitter (connect a shield to the protective
terminal at one point only).
RS-485 interface card or the converter is required for a connection
to a PC, for example PD10. The method of connecting devices is shown
in Fig. 13.
Fig. 13. Connecting the RS-485 interface.
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