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PLC Programming

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6 - The Resources<br />

0: min.TSDR and slave-specific parameters may be overwritten<br />

1: Slave released to other masters,<br />

2: Slave locked to other masters, all parameters are accepted;<br />

3: Slave released to other masters<br />

Identification<br />

Activation<br />

Watchdog<br />

Station address (see 'Properties of the DP masters'), Station name<br />

(matches device name, editable)<br />

Slave is active/inactive in current configuration. If activation is not selected,<br />

configuration data will still be transferred to the coupler on Download, but not<br />

data exchange occurs over the bus.<br />

If Watchdog Control is set active, the entered Watchdog time applies<br />

(access monitoring, basis 10 ms). If the slave has not been accessed by the<br />

master within this time, it is reset to its initialization state.<br />

You can inspect the corresponding GSD file via the GSD-File button.<br />

In-/outputs of a DP slave<br />

Dialog for configuring the in-/outputs of a DP slave<br />

As the maximum data lengths specified in the GSD file (Max. length of input data, Max. length of<br />

output data, Max. length of in-/output data) and the maximum number of modules (Max. number<br />

of modules) must be respected, this information is displayed in both module lists. The left block<br />

displays the maximum possible values for the device, the right the values resulting from summing the<br />

values selected in the configuration. If the maximum values are exceeded, an error message is<br />

issued.<br />

The dialog lists in the left window all the in- and output modules available in the slave's GSD file, while<br />

the right window contains the configuration currently selected for this device as it relates to in- and<br />

outputs.<br />

If this is a modular slave (a device that can be equipped with various I/O modules), the selection<br />

proceeds as follows: In the left-hand list, the desired in- or output module is selected by mouse-click<br />

and copied into the right window using the Select >> button. Incorrect entries can be corrected by<br />

selecting the undesired module in the right window and pressing the Delete button.<br />

This kind of selection is not possible for non-modular slaves. These directly enforce a closed display<br />

of their in- and outputs in the right window. Undesired modules can then by removed by selecting and<br />

using Delete.<br />

CoDeSys V2.3 6-23

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