The External_Control Protocol
115
Axcess Programming Language
This is the exact packet as sent previously with the exception of a different attention byte; it is $26
because this is a response.
If you don't want these responses to appear, you can turn them off by sending the RESPONSE
MASK command (11) with the appropriate mask byte. Only three responses can be turned off, and
their mask bit positions are shown in FIG. 30. A zero (Ø) bit turns the response off, and a one (1) bit
turns the response on.
For example, to turn off RECEIVE STRING responses and turn on GET PUSH and GET
RELEASE responses, send the mask byte $6Ø as shown in FIG. 31.
External_Control
This keyword tells the Central Controller to use a particular Axcess RS-232/422 Interface Card as
an external control port. Once a port has been thus defined, all system functions can be controlled
by an external computer or by another device using RS-232/422. This keyword can only be used in
the DEFINE_START section of the program, and only once. Here is the syntax:
EXTERNAL_CONTROL (device)
FIG. 30
The bit location of several responses in the mask byte
FIG. 31
The mask byte for one combination of response preferences
Содержание Axcess
Страница 1: ...instruction manual Software Axcess Programming Language ...
Страница 8: ...vi Axcess Programming Language Table of Contents ...
Страница 12: ...Introduction 4 Axcess Programming Language ...
Страница 22: ...Axcess Basics 14 Axcess Programming Language ...
Страница 38: ...Channel Characteristics 30 Axcess Programming Language ...
Страница 54: ...Levels 46 Axcess Programming Language ...
Страница 62: ...Operators 54 Axcess Programming Language ...
Страница 66: ...Variable Types and Conversions 58 Axcess Programming Language ...
Страница 70: ...Two Dimensional Arrays 62 Axcess Programming Language ...
Страница 80: ...While Keywords 72 Axcess Programming Language ...
Страница 86: ...Using Buffers 78 Axcess Programming Language ...
Страница 94: ...Waits and Timer Keywords 86 Axcess Programming Language ...
Страница 102: ...Using Subroutines 94 Axcess Programming Language ...
Страница 108: ...Include Files and System_Calls 100 Axcess Programming Language ...
Страница 120: ...Compiler Error Messages 112 Axcess Programming Language ...
Страница 124: ...The External_Control Protocol 116 Axcess Programming Language ...
Страница 143: ...Index 135 Axcess Programming Language ...