General information on commissioning the EL3008-0003, EL3008-0005
The EL3008-000x has 8 analog inputs. In the default setting, the terminal operates with the configuration 8 x analog input with Real32 PDO. The input channels are set to Interface ±3 V (EL3008-0003) or ±5 V (EL3008-0005), Floating Point, Extended Range.
Fig.132: TwinCAT tree EL3008-0003, online values as an example
The terminal contains several functions that are controlled by
enabling/disabling cyclic process data (PDO) at commissioning time in the EtherCAT master,
setting/changing so-called CoE settings in the device; this can be done at runtime.
CoE registers are named below, the "n" in the index stands for the channel number in the terminal: Channel 1: n = 0, channel 2: n = 1, ...
The CoE values cannot be read in real-time; they are updated in the online display in TwinCAT approx. every second, or can be get (or written, depending on the type) from the controller via ADS with an update rate of up to a few ms (depending on the EtherCAT cycle time).
Fig.133: CoE online tab
Before initial commissioning, it may be useful to reset the CoE parameters of the terminal using CoE reset by entering the value after 0x1011:01; this covers all channels (see chapter "Restoring the delivery state")
"Default" or "Default setting" means that the setting named in this way is the basic setting ex factory or CoE reset.
Temporal operating behavior of the EL3008-000x The terminal operates constantly with the conversion time specified in the "Filter" chapter, regardless of the EtherCAT cycle time applied. It supports the following EtherCAT operation modes:
FreeRun: yes if filter is enabled: Regardless of the EtherCAT cycle, the terminal processes its AI/AO data at the conversion rate specified in the chapter "Filter". EtherCAT cycle times supported by the terminal: 100 µs ... 100 ms
Fig.132: TwinCAT tree EL3008-0003, online values as an example
Fig.133: CoE online tab