Beckhoff BC3150 Manuel d'utilisateur télécharger pdf (Page 48)

Safety Instructions

46 Fieldbus Components

K-Bus

BX Settings tab

Check Terminals during Start-up

When a boot project is created, the current Bus Terminal configuration is stored. The connected Bus Terminals are

checked when the BX is restarted. If this option is selected, the Bus Terminal Controller will not commence data

exchange. The PLC project will not be started.

Auto K-Bus Reset

After correction of a K-Bus fault, the Bus Terminal Controller will automatically re-commence data exchange.

Warning

Ensure that the outputs are reactivated immediately and that analog outputs retain their

programmed value, if this is not dealt with in your PLC project.

Clear Outputs on Breakpoint

If break points are set in PLC Control, the K-Bus is no longer processed, i.e. the outputs are set to a safe state (zero).

K-Bus Sync Mode

Writing and reading of the Bus Terminals can occur synchronous with Task1, Task2 or the fieldbus.

K-Bus Re-Trigger

If the processor is busy dealing with the PLC project or the SSB, the K-Bus cannot be processed for a certain amount

of time. This leads to triggering of the Bus Terminal watchdog and dropping of the outputs. The Bus Terminal

Controller is set to re-trigger the K-Bus watchdog 3 times after 85 ms respectively. The K-Bus watchdog would then

be activated.

K-Bus Re-Trigger 0: 100 ms

K-Bus Re-Trigger 1: 2 x 85 ms = 70 ms

K-Bus Re-Trigger 2: 3 x 85 ms = 255 ms

K-Bus Re-Trigger 3: 4 x 85 ms = 340 ms

Reaction on K-Bus Error

In the event of a K-Bus error, the K-Bus inputs are set to "0" or retain their last state.

Response on PLC-Stop

The user can set the behavior of the fieldbus output data in the event of the PLC project being stopped. The master

will use these data as input data. In the event of a PLC stop, the data can be set to "0" or remain unchanged.

1 2 ... 43 44 45 46 47 48 49 50 51 52 53 ... 111 112

Pas de commentaire

Beckhoff BC3150 Manuel d'utilisateur Page 48