Mitsubishi Electric MELSEC iQ-R Series User Manual page 38

When the networks consist of MELSEC iQ-R series and other series
Setting communication paths allows communication with the following networks configured with modules other than MELSEC
iQ-R series.
• Ethernet
• CC-Link IE Controller Network
• CC-Link IE Field Network
• MELSECNET/H
• MELSECNET/10
■Setting method
Set communication paths in "Routing Setting" of "CPU Parameter". ( MELSEC iQ-R CPU Module User's Manual
(Application))
When the networks contain a redundant system
• When the communication paths are automatically set, the paths are updated if system switching occurs in a redundant
system on the paths. During update of the communication paths, communications may be interrupted or data may be lost
because the paths are temporarily undetermined. If an error occurs in communications, resend data from the request
source.
• When the request source is a redundant system and the communication paths are automatically set, perform the transient
transmission from the control system. When performing the transient transmission from the standby system, set "Routing
Setting" of "CPU Parameter"
• When the request destination is a redundant system and the communication paths are automatically set, specify the control
system station as the destination. When specifying the standby system as the request destination, set "Routing Setting" of
"CPU Parameter".
• When relaying a redundant system and setting the communication paths manually, set the control system station as a relay
station in "Routing Setting" of "CPU Parameter". If system switching occurs, the relay station needs to be changed to a
station in the new control system using the RTWRITE instruction.
Execution condition setting
Set the transient transmission execution condition.
Adjust the setting of "Maximum No. of Transient Transmission" and "Maximum No. of Transients in One Station" as necessary.
■Setting method
1.
Set the settings under "Transient Setting". ( Page 65 Supplementary Cyclic Settings)
2.
Click the [Apply] button to finish the settings.
• Increasing the number of transient transmissions allows simultaneous execution of multiple transient
transmission instructions (in one link scan).
• When the number of transient transmissions is increased and the transient request in one network occurs
simultaneously at each station, the link scan time is extended temporarily. As this affects the cyclic
transmission, avoid setting an unnecessarily large number for the setting.
• When transient transmission is simultaneously used with low speed cyclic transmission, this parameter
limits the number of transmission times including both transmissions.
1 FUNCTIONS
36
1.2 Transient Transmission Function