Mitsubishi Electronics FX3G manual - page 6

4
FX3G/FX3U/FX3UC Series Programmable Controllers
Programming Manual - Basic & Applied Instructions Edition
Table of Contents
4.4 State Relay [S] ....................................................................................................................................... 89
4.4.1 Numbers of state relays .......................................................................................................................... 89
4.4.2 Functions and operation examples ......................................................................................................... 90
4.5 Timer [T]................................................................................................................................................. 92
4.5.1 Numbers of timers................................................................................................................................... 92
4.5.2 Functions and operation examples ......................................................................................................... 92
4.5.3 Set value specification method ............................................................................................................... 94
4.5.4 Cautions on routines ............................................................................................................................... 94
4.5.5 Details of timer operation and timer accuracy......................................................................................... 94
4.5.6 Program examples [off-delay timer and flicker timer].............................................................................. 95
4.5.7 Handling timers as numeric devices ....................................................................................................... 96
4.6 Counter [C]............................................................................................................................................. 97
4.6.1 Numbers of counters............................................................................................................................... 97
4.6.2 Features of counters ............................................................................................................................... 97
4.6.3 Related devices (to specify counting direction) [32-bit counter].............................................................. 97
4.6.4 Functions and operation examples ......................................................................................................... 98
4.6.5 Set value specification method ............................................................................................................... 99
4.6.6 Response speed of counters .................................................................................................................. 99
4.6.7 Handling counters as numeric devices ................................................................................................. 100
4.7 High Speed Counter [C] (FX3U/FX3UC PLC) ...................................................................................... 101
4.7.1 Types and device numbers of high speed counters.............................................................................. 101
4.7.2 Input assignment for high speed counters ............................................................................................ 103
4.7.3 Handling of high speed counters........................................................................................................... 104
4.7.4 Current value update timing and comparison of current value.............................................................. 106
4.7.5 Related devices..................................................................................................................................... 107
4.7.6 Changing the logic of external reset input signal .................................................................................. 108
4.7.7 Assignment of counter input terminal and switching of function ........................................................... 108
4.7.8 How to use 2-phase 2-count input counters C251 to C255 with 4 edge counting ................................ 109
4.7.9 Conditions for hardware counters to be handled as software counters ................................................ 110
4.7.10 Response frequency of high speed counters...................................................................................... 111
4.7.11 Cautions on use .................................................................................................................................. 113
4.8 High Speed Counter [C] (FX3G PLCs)................................................................................................. 115
4.8.1 Types and device numbers of high speed counters.............................................................................. 115
4.8.2 Input assignment for high speed counters ............................................................................................ 117
4.8.3 Handling of high speed counters........................................................................................................... 118
4.8.4 Current value update timing and comparison of current value.............................................................. 118
4.8.5 Related devices..................................................................................................................................... 118
4.8.6 Assignment of counter input terminal and switching of function ........................................................... 119
4.8.7 Response frequency of high speed counters........................................................................................ 120
4.8.8 Cautions on use .................................................................................................................................... 121
4.9 Data Register and File Register [D] ..................................................................................................... 123
4.9.1 Numbers of data registers and file registers ......................................................................................... 123
4.9.2 Structures of data registers and file registers........................................................................................ 124
4.9.3 Functions and operation examples of data registers ............................................................................ 125
4.9.4 Functions and operation examples of file registers............................................................................... 127
4.9.5 Cautions on using file registers............................................................................................................. 130
4.10 Extension Register [R] and Extension File Register [ER] .................................................................. 131
4.10.1 Numbers of extension registers and extension file registers............................................................... 131
4.10.2 Data storage destination and access method..................................................................................... 131
4.10.3 Structures of extension registers and extension file registers............................................................. 132
4.10.4 Initialization of extension registers and extension file registers .......................................................... 132
4.10.5 Functions and operation examples of extension registers.................................................................. 133
4.10.6 Functions and operation examples of extension file registers ............................................................ 134
4.10.7 Cautions on using extension file registers........................................................................................... 137
4.10.8 Registration of data in extension registers and extension file registers ..............................................138
4.11 Index Register [V and Z] .................................................................................................................... 142
4.11.1 Numbers of index registers ................................................................................................................. 142
4.11.2 Functions and structures..................................................................................................................... 142
4.11.3 Indexing of devices ............................................................................................................................. 143
4.12 Pointer [P and I] ................................................................................................................................. 144
4.12.1 Numbers of pointers............................................................................................................................ 144
4.12.2 Functions and operation examples of pointers for branch .................................................................. 144
4.12.3 Functions and operation examples of pointers for interrupt................................................................ 145