Mitsubishi Electronics FX1S manual Block, Anb

FX Series Programmable Controllers Basic Program Instructions 2

2.12And Block

FX1S FX1N FX2N FX2NC

	Mnemonic	Function	Format	Devices	Program steps
	ANB	Serial connection
		of multiple		N/A	1
	(ANd Block)
		parallel circuits
Program example:

ANB		LD
X0	X2	X3

		Y7
X1	X4	X5
	X6	ORB
X3

Recommended sequential programming method

0	LD	X	0
1	OR	X	1
2	LD	X	2
3	AND	X	3
4	LDI	X	4
5	AND	X	5

6ORB

7OR X 6

8ANB

9	OR	X	3
10	OUT	Y	7

Basic points to remember:

-An ANB instruction is an independent instruction and is not associated with any device number

-Use the ANB instruction to connect multi-contact circuits (usually parallel circuit blocks) to the preceding circuit in series. Parallel circuit blocks are those in which more than one contact connects in parallel or the ORB instruction is used.

-To declare the starting point of the circuit block, use a LD or LDI instruction. After completing the parallel circuit block, connect it to the preceding block in series using the ANB instruction.

Batch processing limitations:

• When using ANB instructions in a batch, use no more than 8 LD and LDI instructions in the definition of the program blocks (to be connected in parallel). Ignoring this will result in a program error (see ORB explanation for example).

Sequential processing limitations:

• It is possible to use as many ANB instructions as necessary to connect a number of parallel circuit blocks to the preceding block in series (see the program listing).

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