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

Network Topology

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.
To use the loopback function, select "Ring". ( Page 69
Loopback Function)
Network synchronous communication cannot be performed when "Network Topology" is set to "Ring". Select
"Line/Star".

Communication Period Setting

Set the basic cycle setting and multiple cycle setting.
• Basic cycle setting requires calculation of the communication cycle interval and cyclic transmission time. ( Page 293
Communication cycle intervals)
• Multiple cycle setting is used when communication cycles coexist. ( Page 42 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 Cycle Normal-Speed
Setting
Low-Speed
*1 This communication cycle can be used for the firmware version "04" or later.
*2 The setting range of the firmware version "03" or earlier is from 125.00s to 4000.00s.
*3 The setting range of the firmware version "03" or earlier is from 5.00s to 3966.00s.
*4 The setting range of the firmware version "03" or earlier is from 14.00s to 3975.00s.
*5 To use the CC-Link IE TSN network synchronous communication function, set the same value as the value set in "Fixed Scan Interval
Setting" of "Fixed Scan Interval Setting of Inter-module Synchronization" under "Inter-module Synchronization Setting" in the "Inter-
module Synchronization Setting" tab of "System Parameter".
*6 This communication cycle can be used for the firmware version "14" or later.
2 PARAMETER SETTINGS
102
2.3 Basic Settings
Description
Select whether to set the basic cycle in increments of 1s.
Select the setting range of the communication cycle interval.
*5
Enter a value of the communication cycle interval.
*5
Necessary time for the system to guarantee the
communication cycle interval.
When "Communication Speed" of the master station is set to
100Mbps, 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.
Setting range
• Line/Star
• Ring
(Default: Line/Star)
Setting range
• Set
• Not set
(Default: Not set)
• 125.00s
• 250.00s
• 500.00s
• 1000.00s
• 2000.00s
• 4000.00s
*1
• 8000.00s
(Default: 1000.00s)
125.00s to 10000.00s (in
*2
increments of 1s)
(Default: 1000.00s)
• 20.00s
• 200.00s
(Default: 20.00s)
5.00s to 9966.00s (in
*3
increments of 1s)
(Default: 500.00s)
14.00s to 9975.00s (in
*4
increments of 1s)
(Default: 480.00s)
(Default: 4)
• 16
*6
• 32
*6
• 64
*6
• 128
(Default: 16)