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FX3S/FX3G/FX3GC/FX3U/FX3UC Series
Programming Manual - Basic & Applied Instruction Edition
15 External FX I/O Device – FNC 70 to FNC 79
15.8 FNC 77 – PR / Print (ASCII Code)
11
FNC30-FNC39
Rotation and
Shift
12
FNC40-FNC49
Data Operation
13
FNC50-FNC59
High-Speed
Processing
14
FMC60-FNC69
Handy
Instruction
15
FNC70-FNC79
External FX I/O
Device
16
FNC80-FNC89
External FX
Device
17
FNC100-FNC109
Data
Transfer 2
18
FNC110-FNC139
Floating Point
19
FNC140-FNC149
Data
Operation 2
20
FNC150-FNC159
Positioning
Control
Cautions
1. Command input and instruction operation
While the command input is ON: Even if the command input is continuously ON, execution is completed after a
series of outputs.
M8029 turns ON when the command input turns OFF after M8027 turns ON and
execution is completed.
While the command input is OFF: All outputs are OFF.
2. Relationship with the scan time (operation cycle)
This instruction is executed in synchronization with the scan time.
If the scan time is short, the constant scan mode can be used. If the scan mode is too long, the timer interrupt function
can be used.
3. Output type of the PLC
Use a transistor output type PLC.
4. When "00H (NULL code)" is contained in the data (while M8027 is ON)
The instruction is executed completely, and the data after "00H" is not output.
M8029 remains ON during one operation cycle.
5. Limitation in number of instructions
The PR instruction can only be executed twice in a program.
If it is necessary to use the PR instruction 3 times or more, use the indexing (V, Z) function in programming.
6. Caution on use in timer interrupt programs
When the PR instruction is used in a timer interrupt program, it turns ON M8029 in the interrupt program.
→ For details, refer to Subsection 36.5.2.