Description of an AS-Interface Bus Master Debug Screen
Original instructions
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At a Glance
The debug screen dynamically displays the status of the AS-Interface module and the devices connected to the bus.
It also allows access to the adjustment of the slave parameters and to the channel commands (forcing the input or output value, Set/Reset of an output, etc.).
NOTE: If the function READ_STS () is used in an application to read Bus Master information, do not to carry out this function more than once every 1s. Otherwise, the debug screen is not updated correctly.
Example Debug Screen
The figure below shows an example of a debug screen:
Description
The following table shows the different elements of the debug screen and their functions:
Address
Element
Function
1
Tabs
The front tab indicates the mode in progress (Debug for this example). Each mode can be selected with the corresponding tab.
Possible modes are:
  • Debug, only accessible only in Online mode
  • Diagnostics (Default), accessible only in Online mode
  • Configuration
The tab I/O Objects is used to presymbolize the Input/Output objects.
2
Module
This zone specifies the abbreviated title of the module.
In the same field there are 3 LEDs which provide information on the operating mode of the module:
  • RUN indicates the operating mode of the module
  • ERR signals a detected internal error in the module
  • I/O signals a detected errors (external to the module or in an application)
3
General parameters
This zone specifies the parameter setting of the task MAST or FAST configured for the AS-Interface communication channel.
4
AS-Interface configuration and slave
This zone displays the slave devices connected to the bus.
It also displays the status of the slave channels and gives access to the debug functions.