CY545 Stepper System Controller
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Chapter 16 - Timing and Control............................................................................................58
Timing and Control............................................................................................................58
The Parallel Handshake....................................................................................................58
Immediate Commands During External Memory Program Execution ...........................59
The Serial Interface...........................................................................................................62
External Memory Control Signals ......................................................................................63
Special HP LED Display Control Signals...........................................................................65
Thumbwheel Switch Interface Control Signals...................................................................66
Stepper Motor Interface Signals ........................................................................................67
PULSE and CWW .........................................................................................................67
STOPPED.....................................................................................................................69
SLEW............................................................................................................................69
INHIBIT_ABORT ...........................................................................................................70
CW_LIMIT and CCW_LIMIT..........................................................................................71
JOG Mode Operation ....................................................................................................72
Automatic Position Display................................................................................................73
Home Signal..................................................................................................................73
Chapter 17 - CY545 Step Rate Information............................................................................75
CY545 Step Rate Information............................................................................................75
The Slope Parameter ........................................................................................................75
Optimal Acceleration Curves.............................................................................................76
Acceleration Curve as a Function of R ..............................................................................76
Slope and Elapsed Time ...................................................................................................77
CY545 Slope Curves.........................................................................................................78
CY545 Step Rate Table @ 11 MHz...................................................................................81
CY545 Step Rate Table @ 12 MHz...................................................................................82
CY545 Step Rate Table @ 14.75 MHz..............................................................................83
CY545 Step Rate Table @ 16 MHz...................................................................................84
Chapter 18 - Electrical Specifications ...................................................................................85
CY545B Electrical Specifications.......................................................................................85
Electrical Conventions.......................................................................................................85
Reset Circuitry...................................................................................................................85
Clock Circuits ....................................................................................................................86
Chapter 19 - Circuits and Examples ......................................................................................87
Variable Stock Cut and Punch...........................................................................................87
Driver Circuit Considerations.............................................................................................89
Interfacing to the 8255.......................................................................................................92
Operating Several CY545s Using a Common Data Bus....................................................93
Synchronization of Two CY545s........................................................................................93
Coordination of Several CY545s .......................................................................................94
Example Programs and Waveforms..................................................................................95
ASCII and Binary Data Programming Examples................................................................96
Chapter 20 - Getting Your CY545 Running............................................................................97
Getting Your CY545 Running............................................................................................97
BASIC Language CRT Emulation Program.......................................................................99
Changes from CY545 to CY545A....................................................................................101
Changes from CY545A to CY545B .................................................................................101
Stepper Motor Controller Selection Guide .......................................................................102
© 2002 Cybernetic Micro Systems
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