Omron FQ2-S/CH Series User Manual page 147

PROFINET IO
Communication Specifications of PROFINET IO
The communication specifications of PROFINET IO are described below.
Communication Specifica-
tions
Periodic data communica-
tion method
PROFINET IO specifies the supported functions by conformance class, with consideration given to the
application.
Class
Class A
Class B
Class C
The functions below are defined in Class A.
Function
Cyclic data exchange
Acyclic parameter data /
device identification
Device/network diagnosis Communication for the purpose of sending alarms and statuses from I/O
Device Types Used in PROFINET IO
The devices below are defined in PROFINET IO.
Type
I/O controller
I/O device
I/O supervisor
FQ2-S/CH User's Manual
for Communications Settings
Type
RT (real-time) communica-
tion
IRT(Isochronous real-time)
communication
Supports the basic functions of RT communication.
This class adds network diagnosis and redundancy functions used in
process automation and other applications.
Supports IRT communication that realizes reliable synchronization.
Real-time data communication between the I/O controller and I/O devices at
determined cycles.
Set by I/O data CR.
Used for parameter settings, I/O device configuration, and reading of device
information.
Set by record data CR.
devices to the I/O controller.
Set by Alarm CR.
Controller for external and other devices
Sensor device connected to the I/O controller
The FQ2 is an I/O device.
PC or other device used for maintenance and diagnosis
Outputting Data and Controlling Operation through PROFINET
Details
Uses standard Ethernet hardware and
achieves the same level of perfor-
mance as the existing Fieldbus.
This method provides a higher level of
assurance than RT that communica-
tion will be executed within a specific
time.
Intended for use in systems such as
motion control that require strict real-
time.
Overview
Overview
Details
Support on FQ2
Supported
Not supported
Support on FQ2
Supported
Not supported
Not supported
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