Mitsubishi Electronics FX1S manual Or, Or Inverse, Ori

FX Series Programmable Controllers Basic Program Instructions 2

2.7Or, Or Inverse

FX1S FX1N FX2N FX2NC

Mnemonic Function Format Devices Program steps

		Parallel
	OR	connection of NO	X, Y, M, S, T, C	1
	(OR)	(normally open)
		contacts
		Parallel
	ORI	connection of NC	X, Y, M, S, T, C	1
	(OR Inverse)	(normally closed)
		contacts
Program example:

X4

Y5 X6

OR M102

ORI

Y5 X7 X10

M103 M103

M110

0	LD	X	4
1	OR	X	6
2	ORI	M	102
3	OUT	Y	5
4	LDI	Y	5
5	AND	X	7
6	OR	M	103
7	ANI	X	10
8	OR	M	110
9	OUT	M	103

Basic points to remember:

-Use the OR and ORI instructions for parallel connection of contacts. To connect a block that contains more than one contact connected in series to another circuit block in parallel, use an ORB instruction.

-Connect one side of the OR/ORI instruction to the left hand bus bar.

Peripheral limitations:

• The PLC has no limit to the number of contacts connected in series or in parallel. However, some programming panels, screens and printers will not be able to display or print the program if it exceeds the limit of the hardware. It is preferable for each line or rung of ladder program to contain up to a maximum of 10 contacts and 1 coil. Also keep number of follow-on outputs to a maximum of 24.

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