Mitsubishi FX3G Series User Manual

10 Input Wiring Procedures
10.5 Pulse Catch (M8170 to M8175)
128
FX3G Series Programmable Controllers
User's Manual - Hardware Edition
10.5 Pulse Catch (M8170 to M8175)
The PLC (main unit) is provided with a pulse catch function and has 6 pulse catch input points.
→ For details on programming, refer to the programming manual.
10.5.1 Allocation of special memories to input numbers (ON duration of input signals)
10.5.2 Cautions for pulse catch
1. Non-overlap of input numbers
The input terminals X000 to X005 can be used for high-speed counter, input interruption, pulse catch, speed
detection (SPD) instructions and general-purpose input.
Take care not to overlap the input numbers.
Example:
When the C235, C241, C244, C246, C247, C249, C252 and C254 is used, X000 is occupied. Therefore, it is
impossible to use pulse catch input contact M8170.
Input number Contact on sequence program ON duration of input signal
X000 M8170
10 s or more
X001 M8171
X002 M8172 50 s or more
X003 M8173
10 s or more
X004 M8174
X005 M8175 50 s or more

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