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FX3G/FX3U/FX3UC Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
7 Basic Instruction
7.3 AND, ANI
2. ANI instruction (serial connection of NC (normally closed) contacts)
3. Indexing
*1
Devices used in AND and ANI instruction can be indexed with index registers (V and Z).
(State relays (S), special auxiliary relays (M), 32-bit counters (C), and "D.b" cannot be indexed.)
The index registers V0 to V7 and Z0 to Z7 are
available for indexing.
When a used device is an input (X) or output (Y),
the value of an index register (V, Z) is converted
into an octal number, and then added.
Example: When the value of V0 is "10", AND
contact is set to ON or OFF by X012.
*1. This function is supported only in FX
3U
/FX3UC PLCs.
4. Bit specification of data register (D)
*1
A bit in data register (D) can be specified as a device used in AND and ANI instructions.
When specifying a bit in data register, input "."
after a data register (D) number, and then input a
bit number (0 to F) consecutively.
Only 16-bit data registers are available.
Specify a bit number as "0, 1, 2, ... 9, A, B, ... F"
from the least significant bit.
Example: In the example shown on the left, AND
contact turns ON (becomes
conductive) when the bit 3 of D0 turns
ON.
*1. This function is supported only in FX
3U
/FX3UC PLCs.
Errors
• When an I/O number used in AND or ANI instruction does not exist due to indexing, M8316 (Non-existing I/O
specification error) turns ON.
• When the device number of a device (M, T or C) other than I/O used in AND or ANI instruction does not exist due to
indexing, an operation error (error code: 6706) occurs.
X002
Y003
ANI instruction
Circuit program List program
X000
LD
ANI
OUT
0000
0001
0002
X002
X000
Y003
Contact connected
in series
Timing chart
ANI instruction
LD instruction
ON
ONON
X002
ON
Y003
ONON
X000
Y003
Circuit program List program
X000V0
LD
AND
OUT
0000
0001
0004
X002
X000V0
Y003
X002
Y003
Circuit program List program
D0.3
LD
AND
OUT
0000
0001
0004
X002
D0.3
Y003
X002