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422
FX
3G
/FX
3U
/FX
3UC
Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
14 Handy Instruction – FNC 60 to FNC 69
14.4 FNC 63 – INCD / Incremental Drum Sequencer
14.4
FNC 63 – INCD / Incremental Drum Sequencer
Outline
This instruction creates many output patterns using a pair of counters.
1. Instruction format
2. Set data
3. Applicable devices
S
1: "D
.b" is available only in FX
3U
and FX
3UC
PLCs. However, index modifiers (V and Z) are not available.
S
2: This function is supported only in FX
3U
/FX
3UC
PLCs.
Explanation of function and operation
1. 16-bit operation (INCD)
The current value
of a counter is compared with the data table having "n" lines starting from
(which occupies "n" lines x 1 device). When
is equivalent to the table data, the current output is reset,
and the next output is set to ON. In this way, the ON/OFF status of specified outputs is controlled in turn.
Operand type
Description
Data type
Head word device number storing the set value
16-bit binary
Head number of counters whose current value is monitored
16-bit binary
Head bit device number to be output
Bit
n
Number of output bit devices [1
≤
n
≤
64]
16-bit binary
Oper-
and
Type
Bit Devices
Word Devices
Others
System User
Digit Specification
System User
Special
Unit
Index
Con-
stant
Real
Number
Charac-
ter String
Pointer
X Y M T C S D
.b KnX KnY KnM KnS T C D R U
\G
V Z Modify K H
E
"
"
P
3
3
3
3
3 3 3 3
S
2
3
3
3
3 3
3
S
1
3
n
3 3
FNC 63
INCD
−
Mnemonic
Operation Condition
16-bit Instruction
9 steps INCD
Mnemonic
Operation Condition
Continuous
Operation
32-bit Instruction
S
1
S
1
S
2
D
S
1
S
1
S
2
S
2
D
D
1
S
2
D
1
S
1
D
1
S
2
Command
input
FNC 63
INCD
n
S
1
S
2
D
K9999
Count signal
S
2