Mounting and connection
EP4174-0002
20
Version: 1.1.0
3.2.2
EtherCAT - Fieldbus LEDs
Fig. 16: EtherCAT-LEDs
LED display
LED
Display
Meaning
IN L/A
off
no connection to the preceding EtherCAT module
Lit
LINK: connection to the preceding EtherCAT module
flashing
ACT: Communication with the preceding EtherCAT module
OUT L/A
off
no connection to the following EtherCAT module
Lit
LINK: connection to the following EtherCAT module
flashing
ACT: Communication with the following EtherCAT module
Run
off
Status of the EtherCAT module is Init
flashes quickly
Status of the EtherCAT module is pre-operational
flashes slowly
Status of the EtherCAT module is safe-operational
Lit
Status of the EtherCAT module is operational
EtherCAT statuses
The various statuses in which an EtherCAT module may be found are described in the Basic Sys-
tem Documentation for EtherCAT, which is available for download from our website (
Summary of Contents for EP4174-0002
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