5-1
Chapter 5 Devices
Table of Contents
5.1 Introduction of Devices ......................................................................................................... 5-2
5.1.1 Devise Table .............................................................................................................. 5-2
5.1.2 Basic Structure of I/O Storages ................................................................................. 5-4
5.1.3 Relation Between the PLC Action and the Device Type ........................................... 5-4
5.1.4 Latched Areas in the Device Range .......................................................................... 5-5
5.2 Functions of Devices............................................................................................................. 5-6
5.2.1 Values and Constants .................................................................................................... 5-6
5.2.2 Floating-point Numbers ................................................................................................. 5-7
5.2.3 Strings ........................................................................................................................ 5-7
5.2.4 Input Relays ............................................................................................................... 5-7
5.2.5 Output Relays ............................................................................................................ 5-7
5.2.6 Auxiliary Relays ......................................................................................................... 5-8
5.2.7 Special Auxiliary Relays ............................................................................................ 5-8
5.2.8 Stepping Relays ........................................................................................................ 5-8
5.2.9 Timers ........................................................................................................................ 5-8
5.2.10 Counters .................................................................................................................... 5-9
5.2.11 32-bit Counters ........................................................................................................ 5-10
5.2.12 Data Registers ......................................................................................................... 5-10
5.2.13 Special Data Registers ............................................................................................ 5-11
5.2.14 Link Registers .......................................................................................................... 5-11
5.2.15 Index Registers ........................................................................................................ 5-11
5.3 Assigning I/O Addresses ..................................................................................................... 5-12
5.4 Software-defined Addresses ........................................................................................ 5-13
5.4.1 Start Addresses for Digital Input/Output Modules ................................................... 5-13
5.
4.2 Start Addresses for Analog Input/Output Modules .................................................. 5-14
5.4.3 Start Addresses for Temperature Measurement Modules ....................................... 5-15
5.4.4 Start Addresses for Motion Control Modules ........................................................... 5-16
5.4.5 Start Addresses for Network Modules ..................................................................... 5-17
5.5 User-defined Addresses............................................................................................... 5-18
5.5.1 Start Addresses for Digital Input/Output Modules ................................................... 5-18
5.5.2 Start Addresses for Analog Input/Output Modules .................................................. 5-18
5.4.3 Start Addresses for Temperature Measurement Modules ....................................... 5-19
5.4.4 Start Addresses for Motion Control Modules ........................................................... 5-19
5.4.5 Start Addresses for Network Modules ..................................................................... 5-20
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