Horner APG SmartStack I/O HE800DNS600/HEDNS600 - Manual (Page 36)

MAN0577-03-en
Page 36 of 98 EO 09-0009
DeviceNet Modules
HE800DNM650 & HE800DNS600
• Handshake of the process data
With these different modes the handshake of the process data is selected for the Master. The
selection of this mode is important for the correct data exchange between the application and the
device. Please refer to the tool kit or the device driver manual for the detailed description of these
modes. If foreign user programs or drivers are used, like S5 for Windows for example, refer to the
delivered manual to choose the right mode.
NOTE: For HE800DNM650, this must be set to Buffered, host controlled
• Hardware parameter
With this parameter, the size of the dual-port memory of the hardware is selected. The parameter will
enlarge or reduce the possible value ranges for the I/O offsets.
5.4.2. Auto Addressing
With this Check Box it is possible to force the System Configurator to allocate the process data addresses
in physical order itself or to enable the manual address configuration. Please see also Process Data
Configuration
on page 27 .
5.4.2. Addressing Mode
The addresses in the configuration of the Nodes define the starting point of the data in the process
depiction. This can work in a Word or Byte oriented method by means of the Addressing mode
parameter.
Addresses Meaning
Byte addresses The process depiction has a Byte structure and each Byte has its own
address.
Word addresses The process depiction has a Word structure and each Word has its
own address.
Table 7: Addressing Mode
This has nothing to do with the physical size of the Dual-port memory – this is always Byte-oriented!
When the application makes a Word access, it is automatically divided by the PC into two sequential Byte
accesses.