Table of Contents
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Chapter 5
Table of Contents
5.1.
Introduction .................................................................................................. 5-2
5.2.
Common Devices ........................................................................................... 5-2
5.2.1.
Functions of Common Devices ..................................................................... 5-2
5.2.2.
Device List ................................................................................................ 5-2
5.2.3.
Latched Devices......................................................................................... 5-4
5.2.4.
Input Relays (X) ........................................................................................ 5-5
5.2.5.
Output Relays (Y) ...................................................................................... 5-5
5.2.6.
Auxiliary Relays (M) ................................................................................... 5-6
5.2.7.
Special Auxiliary Relays (SM/AM) ................................................................. 5-6
5.2.8.
Data Registers (D) ..................................................................................... 5-6
5.2.9.
Special Data Registers (SR/AR) ................................................................... 5-7
5.2.10.
Link Registers (L)....................................................................................... 5-7
5.2.11.
Stepping Relays (S) ................................................................................... 5-7
5.2.12.
Timers (T) ................................................................................................ 5-7
5.2.13.
Counters (C) ............................................................................................. 5-9
5.2.14.
32-bit Counters (HC/AC) ........................................................................... 5-10
5.2.15.
Index Registers (E) .................................................................................. 5-10
5.2.16.
Values and Constants (K, 16#) .................................................................. 5-11
5.2.17.
Floating-point Numbers (F, DF) ................................................................. 5-12
5.2.18.
5.3.
EtherCAT Symbols ....................................................................................... 5-16
5.4.
Symbols ....................................................................................................... 5-16
5.4.1
Application of Symbols ............................................................................. 5-16
5.4.2
Classes ................................................................................................... 5-16
5.4.3
Data Types ............................................................................................. 5-17
5.4.4
Using Devices, Symbols and Instructions .................................................... 5-18
5.4.5
Modifying a Symbol with an Index Register ................................................. 5-19
5.5.
User-defined Data Type (ENUM) .................................................................. 5-20
Understanding Common Devices
5
5 - 1
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Table of Contents
Troubleshooting
