Delta AH Series

iii
4.6.4 Setting a Real-time Clock ............................................................. 4-46
Chapter 5 Understanding Common Devices
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. Strings (“$”) ............................................................................... 5-14
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. U
ser-defined Data Type (ENUM) ................................................... 5-20
Chapter 6 Understanding Motion Control Devices
6.1 Motion Control Devices ................................................................... 6-2