Mitsubishi FX3G Series Programming Manual

439
FX3G/FX3U/FX3GC/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
Extension function
1. 16-byte serial output
The number of output characters varies depending on the ON/OFF status of the special auxiliary relay M8027.
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
*1
, for example).
It is supposed that data to be displayed is stored in hexadecimal codes in D300 to D307.
1) Program
2) Connection example of the external display unit A6FD
*1
The PLC shown in the example below is the FX2N-16EYT (sink output) connected to the
FX3U-32M.
*1. A6FD was distributed only inside Japan, however, production of the external display unit A6FD was
terminated in November 2002.
3) Timing chart (while M8027 is ON)
Related devices
*2. Cleared when the PR mode is changed from RUN to STOP.
Device Name Description
M8027
*2
PR mode
OFF: 8-byte serial output (fixed to 8 characters)
ON: 16-byte serial output (1 to 16 characters)
X000
FNC 77
PR
M8027
D300 Y020
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
∼
Head
character
Last
character*
Operation is started when X000 turns ON from OFF.
TTT
T: Operation cycle
or interrupt time
Drive input X000
Data Y020 to Y027
Strobe Y030
Execution flag Y031
Execution complete flag M8029
* If "H00 (NULL code)" is contained in the data (16 characters), the character just before "H00 (NULL code)"
is handled as the last character.

Mitsubishi FX3G Series Specifications

General

Model	FX3G Series
Power Supply	AC 100-240V or DC 24V
Program Capacity	32, 000 steps
Execution Speed	0.21 µs/basic instruction
Communication Options	RS-422, USB, Ethernet
Expansion Modules	Analog, digital, communication
Programming Language	Ladder Logic, Instruction List
Built-in Functions	High-speed counters, pulse output
Analog I/O	Available via expansion modules