Table of Contents
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Contents
Operation and Control Instructions .............................................................................................. 23
Connecting Power................................................................................................................. 24
Architecture Overview of the RS485 Serial and Enhanced Parallel Interfaces..................... 24
Command Packet Format ......................................................................................... 24
Response Packet Format.......................................................................................... 25
Parameter Data Types .............................................................................................. 25
Byte Order ................................................................................................................. 25
Operation and Control using the RS485 Serial Interface .......................................... 26
Connecting Multiple Switches using the RS485 Interface......................................... 26
Addressing using the RS485 Serial Interface ........................................................... 27
Protocol for the RS485 Serial Interface..................................................................... 27
The Simplex Parallel Interface (Emulation Mode) ..................................................... 30
Simplex Parallel Interface: Pin Functional Description............................................. 30
Data Lines (D0 to D6) ............................................................................................... 30
/Reset Input Line ....................................................................................................... 31
/Strobe Input Line ...................................................................................................... 31
Busy Output Line....................................................................................................... 31
Error Output Line....................................................................................................... 31
Timing ....................................................................................................................... 32
Timing Key ................................................................................................................ 32
Operation and Control using the Enhanced Parallel Interface .............................................. 33
Enhanced Parallel Interface ...................................................................................... 33
Enhanced Parallel Interface Voltage Levels ............................................................. 33
Enhanced Parallel Timing ......................................................................................... 33
Enhanced Parallel Interface Line Descriptions ......................................................... 34
Data Lines (D0...D7) ................................................................................................. 34
/SOP Input Line ......................................................................................................... 34
/STROBE Input Line.................................................................................................. 34
R/W Input Line .......................................................................................................... 34
BUSY Output Line ..................................................................................................... 34
ERROR Output Line.................................................................................................. 34
/RESET ..................................................................................................................... 34
Protocol for the Enhanced Parallel Interface............................................................. 35
Read Cycle................................................................................................................ 35
Write Cycle ................................................................................................................ 35
Commands ...................................................................................................................................... 39
Common Commands ............................................................................................................ 39
Configuration Commands ..................................................................................................... 56
Application Notes ........................................................................................................................... 77
APPLICATION NOTE: Using the ATTENTION Output Line ................................................ 77
APPLICATION NOTE: Using the TRIGGER Input Line ....................................................... 77
APPLICATION NOTE: Enhanced Parallel Communication Examples ................................ 78
Write Cycle ................................................................................................................ 78
Read Cycle................................................................................................................ 80
APPLICATION NOTE: RS-485 Packet Examples ............................................................... 82
RS485 Packet Example ............................................................................................ 83
APPLICATION NOTE: CRC Examples................................................................................ 84
CRC Generation........................................................................................................ 84
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