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VersaMax PROFINET Scanner Manual
– December 2013
GFK-2721A
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VersaMax PROFINET Scanner Overview
The VersaMax PROFINET Scanner (PNS) module interfaces a remote node of VersaMax
modules to a PROFINET IO network. The PROFINET Scanner scans the modules in its node
(retrieving input data and providing output data), publishes input data on the PROFINET
network at the configured update rate, and receives data for module outputs.
The PNS manages PROFINET communication and module configuration between an IO-
Controller and modules within the remote node. If network communications are lost, the
PROFINET Scanner manages I/O states according to the individual module configurations.
The VersaMax PROFINET Scanner automatically converts between data formats used by
VersaMax modules and the big-endian format used for PROFINET communications.
Input and Output data are coherent over a full scan of the I/O modules. All input data read from
one scan of the modules is kept together and then sent over the PROFINET network. Similarly,
outputs delivered on the network are sent to the I/O modules as a unit. If new outputs arrive
during the writing of data to the output modules, the PNS continues to write to the outputs using
the previous data until all modules have been updated before switching to the newly delivered
data.
VersaMax PROFINET Scanner
IO-Device
Third-Party IO-Device
PROFINET Network
. . .
IO-Controller
VersaMax PROFINET Scanner
IO-Device
VersaMax PROFINET Scanner
IO-Device
