Process data

The EL2262 offers a range of process data for transfer. In the default state the terminal appears in the System Manager as shown in fig. EL2262 default state.

• StartTimeNextOutput
  As described above, the SYNC1 interrupt, in common mode with the fieldbus, triggers in the EL2262 the transfer of the collected process data. Apart from that, the time of the SYNC1 interrupt is equal to the time of the first SYNC0 interrupt that triggers the output of the output voltage. The StartTimeNextOutput value transferred by the EL2262 during an EtherCAT cycle is the start value for the next SYNC1 interrupt with a resolution of 32 bit (see Distributed Clocks). The process data StartTimeNextOutput  can be switched off on the "Process data" tab, SM2, index 0x1702.
  The output time of each individual sample can be determined within the scope of the distributed clocks accuracy with StartTimeNextOutput and the oversampling factor.
• CycCount x
  If the PLC continuously supplies values to this process data on a cyclical basis, the EL2262 can detect any inconsistencies in the process data sequence and increment the internal register 30D_hex as required.
• Sample 0 x / Sample 1 x
  Depending on the selected oversampling factor the digital output values are listed here, from 1 bit to 125 bytes per channel.
• Gap
  This variable is only used as a placeholder and does not represent a usable process data.

Presentation "Sample 0 x / Sample 1 x" The process data Sample 0 x / Sample 1 x must cover a very large range of values, from 1 bit to 1000 bit. In order to keep the display in the configuration tree and the linking with task variables clear, however, the Sample 0 x / Sample 1 x variables are displayed as bits or bytes, depending on the scope: Oversampling factor <= 100: display of the individual bits Oversampling factor   > 100: summarization of the bits in bytes. The task receiving the EL2262 process data therefore has to offer bit or byte arrays as appropriate.