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FX3G/FX3U/FX3UC Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
29 Data Table Operation – FNC250 to FNC269
29.1 FNC256 – LIMIT / Limit Control
21
FNC160-FNC169
Real Time Clock
Control
22
FNC170-FNC179
External Device
23
FNC180
Alternate
Instructions
24
FNC181-FNC189
Others
25
FNC190-FNC199
Block Data
Operation
26
FNC200-FNC209
Character String
Control
27
FNC210-FNC219
Data
Operation 3
28
FNC220-FNC249
Data
Comparison
29
FNC250-FNC269
Data Table
Operation
30
FNC270-FNC274
Ex-Device
Inverter Comms
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