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◦ The device must be in PREOP/SAFEOP/OP for access:
◦ the object 0x10E2 will be introduced into stock products in the course of a necessary firmware
revision.
◦ From TwinCAT 3.1. build 4024.24 the functions FB_EcCoEReadBIC and FB_EcCoEReadBTN for
reading into the PLC and further eBIC auxiliary functions are available in the Tc2_EtherCAT
Library from v3.3.19.0.
• Note: in the case of electronic further processing, the BTN is to be handled as a string(8); the identifier
"SBTN" is not part of the BTN.
• Technical background
The new BIC information is additionally written as a category in the ESI‑EEPROM during the device
production. The structure of the ESI content is largely dictated by the ETG specifications, therefore the
additional vendor-specific content is stored with the help of a category according to ETG.2010. ID 03
indicates to all EtherCAT masters that they must not overwrite these data in case of an update or
restore the data after an ESI update.
The structure follows the content of the BIC, see there. This results in a memory requirement of
approx. 50..200 bytes in the EEPROM.
• Special cases
◦ If multiple, hierarchically arranged ESCs are installed in a device, only the top-level ESC carries
the eBIC Information.
◦ If multiple, non-hierarchically arranged ESCs are installed in a device, all ESCs carry the eBIC
Information.
◦ If the device consists of several sub-devices with their own identity, but only the top-level device is
accessible via EtherCAT, the eBIC of the top-level device is located in the CoE object directory
0x10E2:01 and the eBICs of the sub-devices follow in 0x10E2:nn.
Profibus/Profinet/DeviceNet... Devices
Currently, no electronic storage and readout is planned for these devices.
EP3752-0000
Version: 1.4
Appendix
55
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