Network Topology; Communication Period Setting - Mitsubishi Electric MELSEC iQ-R Series User Manual

Network Topology

In the network topology settings, select the network topology type according to the actual network configuration.
Item Description
Network Select the network topology type according to the actual
topology network configuration.
*1 When the version of Add-on baseSystem is "1.22" or earlier, an error occurs in the motion module.
Precautions
For the communication period, 31.25 s/62.50 s, the network topology is compatible with line topology only. When
connecting with star topology, or coexistence of star and line topologies, set the communication period to 125.00 s or more.

Communication Period Setting

Set the basic cycle setting and multiple cycle setting.
• For the basic cycle setting, the calculation of the communication cycle interval and cyclic transmission time is required.
(Page 275 Communication cycle interval)
• Multiple cycle setting is used when communication cycles coexist. (Page 45 Communication cycles coexistence)
Item
Basic Period Setting in Units of 1 s
Setting
Communication Period
Interval Setting (Do Not
Set it in Units of 1 s)
Communication Period
Interval Setting (Set it in
Units of 1 s)
System Reservation
Time
Cyclic Transmission
Time
Transient Transmission
Time
Multiple Normal-Speed
Cycle Setting
Low-Speed
*1 An error will occur when a value outside the setting range is set.
2 PARAMETER SETTINGS
102
2.3 Basic Settings
Description
Select whether to set the basic cycle in
increments of 1 s.
Communication Period Interval
*1*2
Enter a value of the communication cycle
interval.
*2
Necessary time for the system to
guarantee the communication cycle
interval.
When the master "communication
speed"100 Mbps, select 200 s.
Set the time to be allocated to cyclic
transmission in communication cycle
intervals.
The value of "Communication Period
Interval Setting" minus "Cyclic
Transmission Time" and "System
Reservation Time" is displayed.
Select the "Normal-Speed" cycle for a
basic cycle.
Setting is not required and can be left as
"4".
Select the "Low-Speed" cycle for a basic
cycle.
Select a value larger than the one set for
"Normal-Speed".
Setting range
• Line topology, star topology, or coexistence of star and line topologies
• Ring topology (When using the RD78GH)
(Default: Line topology, star topology, or coexistence of star and line
topologies)
Setting range
PLCopen Motion control FB
mode
• Set
• Not set
(Default: Not set)
*3*4
• 31.25 s
*3
• 62.50 s
• 125.00 s
• 250.00 s
• 500.00 s
• 1000.00 s
• 2000.00 s
• 4000.00 s
*3
• 8000.00 s
(Default: 1000.00 s)
125.00 s to 8000.00 s (in
*3
increments of 1 s)
(Default: 1000.00 s)
• 7.00 s
• 14.00 s
• 20.00 s
• 200.00 s
(Default: 20.00 s)
5.00 s to 7979.00 s (in
*5
increments of 1 s)
(Default: 500.00 s)
14.00 s to 7988.00 s (in
*6
increments of 1 s)
(Default: 480.00 s)
(Default: 4)
• 16
*7
• 32
*7
• 64
*7
• 128
(Default: 16)
*1
Simple Motion mode
• 250.00 s
• 500.00 s
• 1000.00 s
• 2000.00 s
• 4000.00 s
(Default: 1000.00 s)
250.00 s to 4000.00 s (in
increments of 1 s)
(Default: 1000.00 s)
• 20.00 s
• 200.00 s
(Default: 20.00 s)
5.00 s to 3966.00 s (in
increments of 1 s)
(Default: 500.00 s)
14.00 s to 3975.00 s (in
increments of 1 s)
(Default: 480.00 s)