658
FX
3U
/FX
3UC
Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
29 Data Table Operation – FNC250 to FNC269
29.1 FNC256 – LIMIT / Limit Control
Program examples
1. Program example 1
In the program example shown below, the BCD data set in X020 to X037 is controlled by the limit values “500”
to “5000”, and the controlled value is output to D1 when X000 turns ON.
Operation
• In the case of “D0 < 500”, “500” is output to D1.
• In the case of “500
≤
D0
≤
5000”, the value of D0 is output to
D1.
• In the case of “D0 > 5000”, “5000” is output to D1.
2. Program example 2
In the program example shown below, the BCD data set in X020 to X057 is controlled by the limit values
“10000” and “1,000,000”, and the controlled value is output to D11 and D10 when X000 turns ON.
Operation
• In the case of “(D1, D0) < 10000”, “10000” is output to (D11,
D10).
• In the case of “10000
≤
(D1, D0)
≤
1,000,000”, the value of
(D1, D0) is output to (D11, D10).
• In the case of “(D1, D0) > 1,000,000”, “1,000,000” is output
to (D11, D10).
X000
K4X020
D0
FNC 19
BIN
K500
K5000
D0
D1
FNC256
LIMIT
END
Input (D0)
Output (D1)
500
5000
500
5000
X000
K8X020
D0
FNC 19
DBIN
K10000
K1000000
D0
D10
FNC256
DLIMIT
END
Input (D1,D0)
Output (D11,D10)
10000 1,000,000
10000
1,000,000
Содержание FX3U Series
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