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FX Series Programmable Controllers Devices in Detail 4
Chapter Contents
4. Devices in Detail....................................................................................4-1
4.1 Inputs...................................................................................................................4-1
4.2 Outputs ................................................................................................................4-2
4.3 Auxiliar
y
Rela
y
s ...................................................................................................4-3
4.3.1 General Stable State Auxiliar
y
Rela
y
s ......................................................................4-3
4.3.2 Batter
y
Backed/ Latched Auxiliar
y
Rela
y
s.................................................................4-4
4.3.3 Special Dia
g
nostic Auxiliar
y
Rela
y
s .......................................................................... 4-5
4.3.4 Special Sin
g
le Operation Pulse Rela
y
s.....................................................................4-5
4.4 State Rela
y
s ........................................................................................................ 4-6
4.4.1 General Stable State - State Rela
y
s ......................................................................... 4-6
4.4.2 Batter
y
Backed/ Latched State Rela
y
s......................................................................4-7
4.4.3 STL Step Rela
y
s ....................................................................................................... 4-8
4.4.4 Annunciator Fla
g
s ..................................................................................................... 4-9
4.5 Pointers ............................................................................................................. 4-10
4.6 Interrupt Pointers...............................................................................................4-11
4.6.1 Input Interrupts ........................................................................................................4-12
4.6.2 Timer Interrupts ....................................................................................................... 4-12
4.6.3 Disablin
g
Individual Interrupts .................................................................................4-13
4.6.4 Counter Interrupts ...................................................................................................4-13
4.7 Constant K.........................................................................................................4-14
4.8 Constant H.........................................................................................................4-14
4.9 Timers................................................................................................................4-15
4.9.1 General timer operation...........................................................................................4-16
4.9.2 Selectable Timers.................................................................................................... 4-16
4.9.3 Retentive Timers .....................................................................................................4-17
4.9.4 Timers Used in Interrupt and ‘CALL’ Subroutines ................................................... 4-18
4.9.5 Timer Accurac
y
....................................................................................................... 4-18
4.10 Counters............................................................................................................4-19
4.10.1 General/ Latched 16bit UP Counters ...................................................................... 4-20
4.10.2 General/ Latched 32bit Bi-directional Counters.......................................................4-21
4.11 Hi
g
h Speed Counters ........................................................................................4-22
4.11.1 Basic Hi
g
h Speed Counter Operation ..................................................................... 4-23
4.11.2 Availabilit
y
of Hi
g
h Speed Counters on FX
0
, FX
0S
and FX
0N
PCs.........................4-24
4.11.3 Availabilit
y
of Hi
g
h Speed Counters on FX, FX
2C
PCs........................................... 4-25
4.11.4 Availabilit
y
of Hi
g
h Speed Counters on FX
2N
PCs..................................................4-28
4.11.5 1 Phase Counters - User Start and Reset (C235 - C240) .......................................4-29
4.11.6 1 Phase Counters - Assi
g
ned Start and Reset (C246 to C250) ..............................4-30
4.11.7 2 Phase Bi-directional Counters (C246 to C250) .................................................... 4-31
4.11.8 A/B Phase Counters (C252 to C255) ......................................................................4-32
4.12 Data Re
g
isters................................................................................................... 4-33
4.12.1 General Use Re
g
isters ............................................................................................ 4-34
4.12.2 Batter
y
Backed/ Latched Re
g
isters ......................................................................... 4-35
4.12.3 Special Dia
g
nostic Re
g
isters................................................................................... 4-35
4.12.4 File Re
g
isters ..........................................................................................................4-36
4.12.5 Externall
y
Ad
j
usted Re
g
isters .................................................................................4-37
4.13 Index Re
g
isters..................................................................................................4-38
4.13.1 Modif
y
in
g
a Constant...............................................................................................4-39
4.13.2 Misuse of the Modifiers ...........................................................................................4-39
4.13.3 Usin
g
Multiple Index Re
g
isters................................................................................4-39
4.14 Bits, Words, BCD and Hexadecimal..................................................................4-40
4.14.1 Bit Devices, Individual and Grouped .......................................................................4-40
4.14.2 Word Devices .......................................................................................................... 4-42
4.14.3 Interpretin
g
Word Data ............................................................................................ 4-42
4.14.4 Two’s Compliment...................................................................................................4-45
4.15 Floatin
g
Point And Scientific Notation ............................................................... 4-46
4.15.1 Scientific Notation....................................................................................................4-47
4.15.2 Floatin
g
Point Format ..............................................................................................4-48
4.15.3 Summar
y
Of The Scientific Notation and Floatin
g
Point Numbers.......................... 4-49