SEW DFD11B, Руководство пользователя

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Manual – DFD11B DeviceNet Fieldbus Interface
25
5
Configuring PLC and master (DeviceNet scanner)
Project Planning and Startup
After adding the MOVIDRIVE
®
B with DFD11B to the scanlist, the number of Polled I/O
Bytes must be set to 2
×
number of PD (e. g. number of PD = 3
×
number of polled input-
Bytes = 6 and output-Bytes = 6) via [Edit I/O Parameters]. When the DeviceNet config-
uration is saved and downloaded into the scanner, RSNetWorx can be closed.
Depending on the DeviceNet configuration and the mapping rules in the scanner, the
data from and to DeviceNet units is packed into a DINT-Array that is transferred from
the scanner to the local I/O tags of the Logix-Processor.
In order not to have to search for the data from a certain device in this array manually,
the 'DeviceNet Tag Generator' tool generates copy commands and two controller tags
(Input & Output) for each DeviceNet device as a byte-array.
The tag-name contains the MAC-ID of the DeviceNet unit and 'POL_I' for polled input
data or 'POL_O' for polled output data (
→
following figure).
The content of the process data words 1 ... 3 from and to MOVIDRIVE
®
B is defined via
parameter P870 ... P875. The content of the process data words 4 ... 10 is defined by
an IPOS
plus®
program or an application module.
11748AXX
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