Ask-proxima C20 Instrukcja Użytkownika Pobierz pdf (Strona 4)

Projector Control C20 / C60

Page 4

Version 1.

2 GENERAL

This document describes the Communication Protocol between a Proxima® Projector and a Computer

(Host). By using this connection the Host will be able control the projector.

This document are HEX command based only and a regular Terminal program like hyperterminal

etc. can therefore not directly be used unless the COM port are activated by the user. This document

is aimed at control systems in general which is HEX based.

3 FUNCTION TYPE

The Function is grouped in four different function types:

Function type Comments

Execute

An execute function executes an action on the

projector, i.e. only one state.

State

An State function performs a set operation from a

predefined list of states. Not all values in the range

have to be legal.

State String As state but returns ASCII strings

Adjust

An adjust function is characterized by Maximum >

Minimum. And all the integer values between Minimum

and Maximum are legal.

Table 4

4 PROTOCOL MESSAGES

4.1 Message Formats

The message is always divided in a header and a body part:

Message Head (7Byte) Message Body (6Byte)

4.1.1 Message Head

The message head has the following structure:

Byte 0 Byte 1 Byte 2 Byte 3 Byte 4 Byte 5 Byte 6

Magic Number Body size CRC

0xBE

0xEF 0x80 0x06 0x00 CRC_lo CRC_hi

Table 5

1 2 3 4 5 6 7 8 9 10 11 12

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