The WinCC OA
driver RK512 is used for interfacing a programmable logic controller
using the 3964R/RK512 protocol. Data is exchanged between driver
and PLC (Programmable Logical Controller) over a serial interface.
The driver supports read and write commands initiated from WinCC OA and messages sent
spontaneously from the PLC. In addition all procedures supported
by WinCC OA
drivers for converting raw values into engineering values and
vice versa are provided, such as filtering, message conversion,
command conversion and the like.
For information on the supported platforms
for the RK512 driver see
Supported Platforms
of the most important Drivers.
The
RK512 protocol simply enables the transmission of unformatted
data. The information for conversion into the WinCC OA
data formats must be specified in the data point configuration,
and is saved in the "address"
config. All common data formats are supported. A data point is
assigned to the address used in the message (the hardware address)
via a logical address (its peripheral address), which is also
saved in the "address"
config. All block types can be used, such as data blocks, flags,
inputs and outputs etc. Several data points of the same data format
with consecutive hardware addresses can be combined in an array.
The individual elements are addressed using a subindex, which
is also stored in the "address"
config. Configuration is performed either in a panel in WinCC OA, or by importing
ASCII data by the ASCII manager.
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