S-DIAS ETHERCAT CONTROL MODULE
EC 121
02.07.2020
Page 25
8.2
Initialization
In the EtherCAT protocol different states and state transitions are defined during operation.
The S-DIAS control module mirrors these EtherCAT states on the S-DIAS bus or in the S-
DIAS slaves.
8.2.1
S-DIAS Manager
1. EC 121 Power-Up
2. The S-DIAS Manager integrated into the EC 121 searches the S-DIAS bus for
available modules.
3. Create service and process data configuration for the EtherCAT protocol (for this
purpose, info files are required which are stored in the S-DIAS slaves).
4. Generate object list using located S-DIAS modules.
5. S-
DIAS initialization is “paused” until the EtherCAT bus changes from the Pre-
Operational (PreOp) mode to Safe-Operational (Safe-Op) mode.
6. EtherCAT slave is available on the EtherCAT bus
