465
FX3G/FX3U/FX3UC Series Programmable Controllers
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
2. Timing chart
Types of output signals
• to +7: Sending output ( handles low-order bits, and +7 handles high-order bits.)
• +8: Strobe signal
• +9: Execution flag which operates as shown in the above timing chart
Extension function
1. 16-byte serial output
Depending on the ON/OFF status of the special auxiliary relay M8027, the number of characters output by
one-time execution of the instruction varies.
While M8027 is OFF, 8-byte serial output (fixed to 8 characters) is executed. While M8027 is ON, 16-byte
serial output (1 to 16 characters) is executed.
In the example shown below, up to 16 characters (1 character/byte) are output to the display unit (external
display unit A6FD, for example).
It is supposed that data to be displayed is stored in hexadecimal codes in D300 to D307.
1) Connection example of the external display unit A6FD
*1
The PLC shown in the example below is the FX2N-16EYT (sink input/sink output) connected to the
FX
3U-32M.
*1. A6FD was distributed only inside Japan, however, production of the external display unit A6FD was
terminated in November 2002.
T
0
T
0
T
0
T
0
: Scan time (ms)
ABCD H
Command input
to +7 Data
+8 Strobe
+9 Execution flag
+1 +2 +3 +7
D
D
D
D
S
1
S
1
S
1
S
1
S
1
D
D
D
D
D
D
External display unit A6FD
*1
PLC
AC100/200V
LG
Y031 Y032
24V
D 0 D 1 D 2 D 3 D 4 D 5 D 6 D 7
Y033
COM1
Y020 Y021 Y022 Y023 Y024 Y025 Y026 Y027
COM2
Y030
STR
COM
12V
AC AC
NC
∼
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