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FX3G/FX3U/FX3UC Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
14 Handy Instruction – FNC 60 to FNC 69
14.8 FNC 67 – RAMP / Ramp Variable Value
14.8 FNC 67 – RAMP / Ramp Variable Value
Outline
This instruction obtains the data which changes between the start value (initial value) and the end value (target value)
over the specified "n" times.
1. Instruction format
2. Set data
3. Applicable devices
Explanation of function and operation
1. 16-bit operation (RAMP)
When the start value and the end value have been specified and the command input is set to ON, the
value obtained by adding a value divided equally by "n" times to in every operation cycle is stored to .
By combining this instruction and an analog output, the cushion start/stop command can be output.
• The number of scans ("0" to "n") is stored in +1.
• The time from start to the end value is the operation cycle multiplied by "n" times.
• If the command input is set to OFF in the middle of operation, execution is paused. (The present data value stored
in is held, and the number of scans stored in +1 is cleared.) When the command input is set to ON
again, is cleared, and the operation is started from .
Operand type Description Data type
Device number storing the initial value of ramp 16-bit binary
Device number storing the target value of ramp 16-bit binary
Device number storing the current value of ramp 16-bit binary
n Ramp transfer time (scan) [1 to 32, 767] 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
XYMTCSD
.b KnX KnY KnM KnS T C D R
U\G
V Z Modify K H E "
"P
33 3
33 3
33 3
n 33 33
FNC 67
RAMP
−
Mnemonic Operation Condition
16-bit Instruction
9 steps RAMP
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
1
D
1
S
2
D
1
S
1
D
1
D
Command
input
FNC 67
RAMP
nS
1
S
2
D
Number of scans +1
1) In the case of " < "
"n" scans
2) In the case of " > "
S
1
S
1
S
1
S
1
S
2
D
S
2
D
S
2
S
2
"n" scans
D
Number of scans +1
D
D
1
D
D
1
D
D
1
D
D
1
D
D
1
S
1