Beckhoff EtherCAT EL6752 Documentation page 49

Fig. 43: "Connection" tab showing connection type "Polling" and input and output parameters
Maximum output data length
The maximum data length per data direction is 255 bytes.
The indicated input and output data lengths must be configured for the corresponding DeviceNet master.
Bit strobe
The IO mode bit strobe involves an 8-byte command from the master to the slaves. For each possible
address/MAC ID (DeviceNet address space: 64) 1 bit of user data is allocated. The maximum length of the
response message from the slave is 8 bytes. It is sent to the master immediately when the bit strobe
command is received.
EL6752
Parameterization and commissioning
Version: 2.1 49