Strict Check Configuration; Failsafe Behaviour Of Outputs - Procentec ComBricks User Manual

Profibus data hub for repeaters and fiber optics modules

Table of Contents

11.4.1 Strict Check Configuration

This feature enables you to select if the slave should report a configuration mismatch, if this situation occurs. A

configuration mismatch will take the slave out of Data Exchange. In the above example the slave was online

and could send diagnostics. With Strict Configuration the configuration of the modules in the backplane must

be exactly the same as the configuration in the PLC, or the slave will show up with a purple background in

ProfiTrace as shown in Fig. 67. This feature gives you more control over how the slave behaves if a module is

removed.

Fig. 67 - Slave indicating a configuration error or module mismatch with 'Strict check config' enabled

To activate this feature, go to the user parameter assignment of the PROFIBUS device in your configuration tool

and change the value of the Strict Check Configuration from 'Disable' to 'Enable'. Remember to download the

new configuration for the settings to take effect.

The slave will also generate diagnostics. These can be read as described in Fig. 66.



The functionality in this paragraph is only available for PBS-001 modules

with software version 2.1 or higher. Please refer to paragraph 17.2 for a

guide to update your module. Use the correct GSD file.

In case of failure of the master, cable, ComBricks Headstation or backplane, the outputs of the ComBricks

modules can be set to a failsafe state. This happens after a certain time-out period during which the slave did

not receive any telegram from its master. This time-out is called the watchdog in the master configuration.

You can configure the failsafe behaviour in the 'module parameters' of the master configuration tool. The

following options are available for fail-safe state:

•

All outputs to 0x00 (off)

•

All outputs to 0xFF (on)

•

Keep last value (no change)

•

Pre-defined value (configurable)

Open the properties of a ComBricks output module (generally by double-clicking on it) in the configuration tool

and select 'Parameter Assignment' or 'Module Parameters'. A screen similar to Fig. 68 will appear:

114/219

Table of Contents