DL06 Micro PLC User Manual, 3rd Edition, Rev. E
ix
Table of Contents
Purpose ....................................................................................................................6–2
Drum Terminology ...................................................................................................6–2
Drum Chart Representation ......................................................................................6–3
Output Sequences ....................................................................................................6–3
Step Transitions .........................................................................................................6–4
Drum Instruction Types ............................................................................................6–4
Timer-Only Transitions .............................................................................................6–4
Timer and Event Transitions .....................................................................................6–5
Event-Only Transitions ..............................................................................................6–6
Counter Assignments ...............................................................................................6–6
Last Step Completion ...............................................................................................6–7
Overview of Drum Operation ...................................................................................6–8
Drum Instruction Block Diagram ..............................................................................6–8
Powerup State of Drum Registers .............................................................................6–9
Drum Control Techniques .......................................................................................6–10
Drum Control Inputs ..............................................................................................6–10
Self-Resetting Drum................................................................................................6–11
Initializing Drum Outputs .......................................................................................6–11
Using Complex Event Step Transitions ...................................................................6–11
Drum Instruction .....................................................................................................6–12
Timed Drum with Discrete Outputs (DRUM) ..........................................................6–12
Event Drum (EDRUM) ............................................................................................6–14
Handheld Programmer Drum Mnemonics ..............................................................6–16
Masked Event Drum with Discrete Outputs (MDRMD) ...........................................6–19
Masked Event Drum with Word Output (MDRMW) ...............................................6–21
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