Chapter 1: Introduction; Versamax Profinet Scanner Overview - Emerson PACSystems Versamax User Manual

User Manual
GFK-2721B
Chapter 1:
This chapter provides an overview of the VersaMax PROFINET Scanner (PNS) module and its
operation. This chapter also includes a list of the VersaMax modules that can be included in the
VersaMax PROFINET Scanner IO-Device.
Chapter 2, Installation, gives instructions for module installation, panel-mounting, grounding,
installing power supplies, and updating firmware. It also describes powerup and restart, and LED
operation.
Chapter 3, Configuration, describes how to configure the PROFINET Scanner and its associated
I/O devices.
Chapter 4, Diagnostics, describes the input and output data that can be used to monitor and
control the PROFINET Scanner. This chapter also explains how the PROFINET Scanner reports
errors to the control system.
Appendix A, PROFINET Specifications, summarizes the features specified for PROFINET
v2.3 Class A IO-Devices that are supported by the VersaMax PROFINET Scanner module.
1.1

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.
Introduction
Introduction
Chapter 1
Sep 2019
1