FX Series Programmable ControllersDevices in Detail 4

Chapter Contents

 

4. Devices in Detail

4-1

4.1

Inputs

4-1

4.2

Outputs

4-2

4.3

Auxiliary Relays

4-3

4.3.1

General Stable State Auxiliary Relays

4-3

4.3.2

Battery Backed/ Latched Auxiliary Relays

4-4

4.3.3

Special Diagnostic Auxiliary Relays

4-5

4.3.4

Special Single Operation Pulse Relays

4-5

4.4

State Relays

4-6

4.4.1

General Stable State - State Relays

4-6

4.4.2

Battery Backed/ Latched State Relays

4-7

4.4.3

STL Step Relays

4-8

4.4.4

Annunciator Flags

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

Disabling 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 Accuracy

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 High Speed Counters

4-22

4.11.1 Basic High Speed Counter Operation

4-23

4.11.2 Availability of High Speed Counters

4-24

4.11.3

1 Phase Counters - User Start and Reset (C235 - C240)

4-26

4.11.4

1 Phase Counters - Assigned Start and Reset (C246 to C250)

4-27

4.11.5

2 Phase Bi-directional Counters (C246 to C250)

4-28

4.11.6 A/B Phase Counters (C252 to C255)

4-29

4.12 Data Registers

4-30

4.12.1 General Use Registers

4-31

4.12.2 Battery Backed/ Latched Registers

4-32

4.12.3 Special Diagnostic Registers

4-32

4.12.4 File Registers

4-33

4.12.5 Externally Adjusted Registers

4-34

4.13 Index Registers

4-35

4.13.1 Modifying a Constant

4-36

4.13.2 Misuse of the Modifiers

4-36

4.13.3 Using Multiple Index Registers

4-36

4.14 Bits, Words, BCD and Hexadecimal

4-37

4.14.1 Bit Devices, Individual and Grouped

4-37

4.14.2 Word Devices

4-39

4.14.3 Interpreting Word Data

4-39

4.14.4 Two’s Compliment

4-42

4.15 Floating Point And Scientific Notation

4-43

4.15.1 Scientific Notation

4-44

4.15.2 Floating Point Format

4-45

4.15.3 Summary Of The Scientific Notation and Floating Point Numbers

4-46

 

 

Page 74
Image 74
Mitsubishi Electronics FX1S manual FX Series Programmable ControllersDevices in Detail