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FX3S/FX3G/FX3GC/FX3U/FX3UC Series
Programming Manual - Basic & Applied Instruction Edition
13 High-Speed Processing – FNC 50 to FNC 59
13.3 FNC 52 – MTR / Input Matrix
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
13.3.1 Operation and cautions for the MTR instruction
1. Command input
1) Setting the command input to normally Open
For the MTR instruction, set the command input to normally Open.
2. Input numbers used in the MTR instruction
1) Inputs available in MTR instruction
Use inputs X020 and later under normal conditions.
2) When using the inputs X000 to X017
*1
The receiving speed is higher. Because the output transistor recovery time is long and the input sensitivity is high,
however, erroneous input pulses may be counted.
To prevent erroneous input pulses, connect pull-up resistors (3.3 kΩ/0.5 W) to transistor outputs used in MTR
instruction.
For pull-up resistors, use the power supply shown in the table below.
The figure below shows an example of the FX
3U Series main unit (sink input/sink output).
*1. X000 to X007 in the FX
3G/FX3GC.
3. ON/OFF duration of input signals
Because 64 input points (8 rows × 8 columns) are received in a cycle of 80 or 160 ms, the ON/OFF duration of each
input signal should be greater than or equal to the value shown below:
*2. X000 to X007 in the FX
3G/FX3GC.
*3. X010 and later in the FX
3G/FX3GC.
Power supply used for pull-up resistors transistor output
AC power type PLC Service power supply
DC power type PLC Power supply for driving PLC
M{{
(normally Open)
FNC 52
MTR
X020 Y040 M0 K8
COM5 Y020 Y021 Y022 Y023 Y024 Y025 Y026 Y027
0V X000 X001 X002 X003 X004 X005 X006 X007
Matrix
circuit
3.3k /0.5W
FX3U-64MT/ES
Transistor output
Pull-up resistor
Refer to the
previous page.
24V
S/S
80 ms 80 ms
When inputs X000 to
X017
*2
are used
160 ms 160 ms
When inputs X020
*3
or
later are used