Omron SYSMAC FH Series User Manual page 325

Precautions for Correct Use
• For a network that many devices are connected, temporal heavy load on the network may
cause communication errors or lower performance such as response delay or packet loss.
Perform the verification under actual conditions before use.
• When operating the network under high load condition, perform the verification under actual
conditions before use because a certain margin in measurement cycle time is necessary for
stable communications.
• Use the EtherNet connector 2 (lower side) when using FH-1000/FH-3000 series with 4 cam-
eras or 8 cameras and FH-2000/FH-5000 series via PROFINET. The EtherNet connector 1
(upper side) cannot be used for PROFINET communications.
• When using PROFINET communications in multi-line random trigger mode with three lines or
more, recommend to use FH-3000/5000 series because it is likely to e a high-load state.
• PROFINET cannot be used together with PLC link or serial (EtherNet).
PROFINET IO
l Communication Specifications for PROFINET IO
Here, describe the communication specifications for PROFINET IO.
Communication
specifications
Periodic data commu-
nication method
PROFINET IO has specified the supported functions per conformance class with an awareness of
applications.
Class
Class A
Class B
Class C
The following functions are defined in Class A.
Function
Cyclic data exchange
FH/FHV Series Vision System User's manual for Communication Settings (Z342-E1)
2 Methods for Connecting and Communicating with External Devices
Method
RT (real-time) com-
munication
IRT (Isochronous re-
al-time) communica-
tion
Supports the basic functions of RT communication.
Network diagnosis and redundancy functions used in proc-
ess automation are added.
Supports IRT communication achieving reliable synchroni-
zation.
This is real-time data communication between the IO controller and IO devices per-
formed at a determined cycle.
This is set by IO data CR.
Description
Uses standard Ethernet hardware
and achieves the same level of
performance as the existing Field-
bus.
Provides a higher level of assur-
ance about executing communica-
tion within a particular time than
RT communication.
This is assumed to be used in a
system requiring strict real-time
such as motion control.
Overview
Overview
2
Support on the
FH/FHV series
Supported
Not supported
Support on the
FH/FHV/FZ5 series
Supported
Not supported
Not supported
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