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Basics communication
Fig. 7: System manager current calculation
Malfunction possible!
The same ground potential must be used for the E-Bus supply of all EtherCAT terminals in a terminal block!
3.3
General notes for setting the watchdog
The EtherCAT terminals are equipped with a safety device (watchdog) which, e. g. in the event of interrupted
process data traffic, switches the outputs (if present) to a presettable state after a presettable time,
depending on the device and setting, e. g. to FALSE (off) or an output value.
The EtherCAT slave controller (ESC) features two watchdogs:
• SM watchdog (default: 100 ms)
• PDI watchdog (default: 100 ms)
Their times are individually parameterized in TwinCAT as follows:
24
NOTICE
Version: 3.1
EL3692
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