Mitsubishi Electric MELIPC MI5000 Series User Manual page 84

Cyclic transmission data flow
The following figure shows the data transitions of cyclic transmission when a group number is set.
■Basic operation
The master station sends requests, that vary from a group to group, to all salve stations. The slave stations receive multiple
request messages from the master station; however, each slave station handles a request message for a group where each
slave stations belong to.
After the link scan time set for each group has elapsed, the master station starts sending another request to the group. Since
the link scan setting can be configured for each group, the setting can be configured according to the response processing
time of each group. ( Page 83 Link scan time settings)
(3)
Lst2
Ø
Lst1
Õ
Lst2
Ø
Lst1
Õ
Lst2
Lst1: Link scan time of group 1 (link scan)
Lst2: Link scan time of group 2 (link scan)
(1) Group No.1
(2) Group No.2
(3) Master station 1
(4) Slave station 1
(5) Slave station 2
(6) Slave station 3
 The master station sends requests to the slave station 1 and slave station 2 that belong to group 1.
 The slave station 1 returns a response to the master station.
 The slave station 2 returns a response to the master station.
 After the link scan time set to the group 1 is elapsed, the master station starts sending another request.
 The master station sends a request to the slave station 3 that belongs to group 2.
 The slave station 3 returns a response to the master station.
 After the link scan time set to the group 2 is elapsed, the master station starts sending another request.
7 CC-Link IE Field Network Basic FUNCTION
82
7.1 Cyclic Transmission
(4)
Ò
Ó
Ò
Ó
Ò
(1)
(5)
Ô
Ô
(2)
(6)
Ö
×
Ö
×