Input Assignment For High Speed Counters - Mitsubishi Electric MELSEC-Q Structured Programming Manual

FXCPU Structured Programming Manual
[Device & Common]
2.7.2

Input assignment for high speed counters

Inputs X000 to X007 (X003) are assigned as shown in the tables below according to each high speed counter
number.
When a high speed counter is used, the filer constant of a corresponding input number in the PLC main unit
automatically changes.
Input terminals not used for high speed counters, however, can be used as general inputs.
→ For the input specifications of the PLC main unit, refer to the hardware manual of the PLC main
FX /FX PLCs : (X000 to X005:5μS, X006, X007:50μS)
3U 3UC
FX /FX PLCs : (X000, X001, X003, X004:10μS, X002, X005 to X007:50μS)
3G 3GC
FX PLC : (X000, X001:10μS, X002 to X007:50μS)
3S
FX /FX /FX
1S 1N
FX /FX /FX
0S 0 0N
• Prohibition on redundant use of input terminals
Inputs X000 to X007(X003) are used for high speed counters, input interrupt, pulse catch, SPD/DSZR/
DVIT/ZRN instructions and general-purpose inputs.
Make sure to use each input terminal only once.
/FX /FX PLCs : (X000, X001:20μS, X002 to X005:50μS)
1NC 2N 2NC
/FX /FX PLCs : (X000 to X003/X005:50μS)
U 2C
2 Devices in Detail
2.7 High Speed Counter [C]
unit.
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