Delta DVP-ES2/EX2/SS2/SA2/SX2/SE manual Plc

3. Instruction Set

182.Please use transistor output for Y20 ~ Y23. Every pin 1, 2, 4, 8 shall be connected to a diode (0.1A/50V) in series before connecting to the input terminals on PLC.

Wiring diagram of DIP switch:

DIP switches for				100		101		102		103
BCD wiring
										Must connect to a
										diode (1N4148) in
										series
			1	2	4	8	1	2	4	8
0V	+24V	S/S	X20	X21	X22	X23	X24	X25	X26	X27
		The first group					The second group
		C	Y20	Y21	Y22	Y23				PLC
			100	101	102	103

Points to note:

When the terminals to be scanned are relay outputs, the following program methods can be applied:

183.When X30 = ON, DSW instruction will be executed. When X30 goes OFF, M10 remains ON until the current scan cycle of output terminals is completed..

184.If the drive contact X30 uses button switch, M10 turns off only when the current scan cycle on outputs is completed, so that a correct value from DIP switch can be read. In addition, the continuous scan cycle on outputs will be performed only when the drive contact is pressed and held. Applying this method can reduce the driving frequency of relay outputs so as to extend to life-span of relays.

X30

SET M10

M10

DSW X20 Y20 D20 K2

M1029

RST M10

3 - 1 8 9