Configuration
CX51x0
66
Version: 2.8
5. Select the appropriate LAN connection according to your cabling at the Embedded PC.
6. Confirm the settings with
OK
.
ð
You have successfully configured cable redundancy. Under the
Online
tab the EtherCAT slaves are
displayed, for which cable redundancy was configured.
Under
State
the state of the individual EtherCAT slaves is displayed. If, for example, the cable
connection between the EK1100 and EK1110 Bus Couplers is interrupted, the status of the Bus Coupler
changes. The message "LINK_MIS B" and "LINK_MIS A" appears under status.
Although the connection between the Bus Couplers is interrupted, the EtherCAT Terminals connected to
the EK1100 Bus Coupler show no fault.
If the cable connection is interrupted without cable redundancy at the same location, the terminals show
a fault under status.
7.5.6
Using a hardware watchdog
The function block
FB_PcWatchdog_BAPI
activates a hardware watchdog on the Embedded PC. The
watchdog can be used to automatically restart systems that have entered an infinite loop or where the PLC
has stopped.
The watchdog is activated with
bExecute
= TRUE and
nWatchdogTimeS
>= 1s.
Once the watchdog has been activated, the function block must be called cyclically and at shorter intervals
than nWatchdogTimeS, because the Embedded PC automatically restarts if the set time is less than
nWatchdogTimeS.
