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FX3S/FX3G/FX3GC/FX3U/FX3UC Series
Programming Manual - Basic & Applied Instruction Edition
Table of Contents
4.4 State Relay [S].......................................................................................................................................94
4.4.1 Numbers of state relays..........................................................................................................................94
4.4.2 Functions and operation examples .........................................................................................................95
4.5 Timer [T].................................................................................................................................................97
4.5.1 Numbers of timers...................................................................................................................................97
4.5.2 Functions and operation examples .........................................................................................................97
4.5.3 Set value specification method ...............................................................................................................99
4.5.4 Cautions on routines ...............................................................................................................................99
4.5.5 Details on timer operation and timer accuracy........................................................................................99
4.5.6 Program examples [off-delay timer and flicker timer]............................................................................100
4.5.7 Handling timers as numeric devices .....................................................................................................101
4.6 Counter [C]...........................................................................................................................................102
4.6.1 Numbers of counters.............................................................................................................................102
4.6.2 Features of counters.............................................................................................................................102
4.6.3 Related devices (to specify counting direction) [32-bit counter]............................................................103
4.6.4 Functions and operation examples .......................................................................................................103
4.6.5 Set value specification method .............................................................................................................104
4.6.6 Response speed of counters ................................................................................................................105
4.6.7 Handling counters as numeric devices .................................................................................................105
4.7 High-Speed Counter [C] (FX3S/FX3G/FX3GC PLCs)..........................................................................107
4.7.1 Types and device numbers of high-speed counters .............................................................................107
4.7.2 Input assignment for high-speed counters............................................................................................109
4.7.3 Handling of high-speed counters ..........................................................................................................110
4.7.4 Current value update timing and comparison of current value..............................................................110
4.7.5 Related devices.....................................................................................................................................110
4.7.6 Assignment of counter input terminal and switching of function ...........................................................111
4.7.7 Response frequency of high-speed counters........................................................................................112
4.7.8 Cautions on use....................................................................................................................................114
4.8 High-Speed Counter [C] (FX3U/FX3UC PLC) ......................................................................................116
4.8.1 Types and device numbers of high-speed counters .............................................................................116
4.8.2 Input assignment for high-speed counters............................................................................................118
4.8.3 Handling of high-speed counters ..........................................................................................................119
4.8.4 Current value update timing and comparison of current value..............................................................121
4.8.5 Related devices.....................................................................................................................................122
4.8.6 Changing the logic of external reset input signal ..................................................................................123
4.8.7 Assignment of counter input terminal and switching of function ...........................................................123
4.8.8 How to use 2-phase 2-count input counters C251 to C255 with 4 edge counting ................................124
4.8.9 Conditions for hardware counters to be handled as software counters ................................................125
4.8.10 Response frequency of high-speed counters......................................................................................126
4.8.11 Cautions on use..................................................................................................................................128
4.9 Data Register and File Register [D] .....................................................................................................130
4.9.1 Numbers of data registers and file registers .........................................................................................130
4.9.2 Structures of data registers and file registers........................................................................................131
4.9.3 Functions and operation examples of data registers ............................................................................132
4.9.4 Functions and operation examples of file registers...............................................................................134
4.9.5 Cautions on using file registers.............................................................................................................137
4.10 Extension Register [R] and Extension File Register [ER] ..................................................................138
4.10.1 Numbers of extension registers and extension file registers...............................................................138
4.10.2 Data storage destination and access method.....................................................................................138
4.10.3 Structures of extension registers and extension file registers.............................................................139
4.10.4 Initialization of extension registers and extension file registers ..........................................................139
4.10.5 Functions and operation examples of extension registers..................................................................140
4.10.6 Functions and operation examples of extension file registers ............................................................141
4.10.7 Cautions on using extension file registers...........................................................................................143
4.10.8 Registration of data in extension registers and extension file registers ..............................................144
4.11 Index Register [V and Z] ....................................................................................................................148
4.11.1 Numbers of index registers.................................................................................................................148
4.11.2 Functions and structures.....................................................................................................................148
4.11.3 Indexing of devices .............................................................................................................................148
4.12 Pointer [P and I] .................................................................................................................................149
4.12.1 Numbers of pointers............................................................................................................................149
4.12.2 Functions and operation examples of pointers for branch ..................................................................149
4.12.3 Functions and operation examples of pointers for interrupt................................................................150