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2-4. Connection of the serial interface (S-I/F)
It is a two-wire method serial interface to connect a printer and an external indicator, etc.
● There are M250 printer etc. made by Unipulse as an equipment for the serial interface.
● The cable must use two wires shielded cable as much as possible. Please connect the shield to F.G. terminal.
Please make the cable in the twist when you do not use the shielded wire.
(The length of the cable is within 100 m for shielded wire, and within 20 m for unshielded wire.)
● Equipment for the serial interface can be connected up to three units in parallel. (The maximum output current Approx.DC20 mA)
● Common of the COM of the external control input(two pins) and the serial interface circuit is common.
● Internal circuit is isolated through photo-coupler.
CSD-904-EX internal
equivalent circuit
Equipment for
serial interface
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