BECKHOFF EL9xxx - Manual (Page 59)

Basics communication
• If the slave is online
­ The actual current slave list is read. This may take several seconds, depending on the size and cycle time.
­ The actual identity is displayed
­ The firmware and hardware version of the equipment according to the electronic information is displayed
­ Online is shown in green.
Fig. 46: Online list
Channel­based order
The CoE list is available in EtherCAT devices that usually feature several functionally equivalent channels.
For example, a 4­channel analog 0..10 V input terminal also has 4 logical channels and therefore 4 identical
sets of parameter data for the channels. In order to avoid having to list each channel in the documentation,
the placeholder "n" tends to be used for the individual channel numbers.
In the CoE system 16 indices, each with 255 subindices, are generally sufficient for representing all channel
parameters. The channel­based order is therefore arranged in 16
dec
/10
hex
steps. The parameter range x8000
exemplifies this:
• Channel 0: parameter range x8000:00 ... x800F:255
• Channel 1: parameter range x8010:00 ... x801F:255
• Channel 2: parameter range x8020:00 ... x802F:255
• ...
This is generally written as x80n0.
Detailed information on the CoE interface can be found in the EtherCAT system documentation on the
Beckhoff website.
EL9xxx 59 Version 3.1