General Notes For Setting The Watchdog - Beckhoff EPP3504-0023 Short Manual

Fig. 151: 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!
6.6

General notes for setting the watchdog

The ELxxxx 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:
EPP3504-0023
Commissioning on EtherCAT Master
NOTE
Version: 1.2 193