Significance Of Cyclic Transmission ･････････････････30; Uls/Lks Transmission････････････････････････････30 - Toshiba V Series Operation Manual

Chapter 8 Cyclic Transmission
8.3 Significance of Cyclic Transmission
Cyclic transmission, which updates the common memory data, does not confirm the
exchange between nodes as with message transmission. Therefore, in order to use the
data acquired in S controller register in section 8.1 and 8.2, the status of the originating
node must be confirmed. At the same time, the fact that the own node is continuing
transmission must also be confirmed periodically.
Own node confirmation
(1)
(2)
Confirming the opposite node of the originator
(1)
(2)
8
8.4 ULS/LKS Transmission
The value of ULS/LKS in the transmitted cyclic frame header is as follows:
RUN mode
Other than RUN mode (HALT, error down)
30
Information name: Node status (see section "11. RAS Information" for details)
Confirmation method:
•
FL312 must be linked in FL-net in run mode
• Scan transmission is allowed
Information name: Cyclic node map (see section "11. RAS Information" for details)
Confirmation method:
•
Originating mode is enabled
S controller status
RUN mode
Other than RUN mode (HALT, error down)
State
Scan transmission allowed
scan transmission prohibited
model 3000 FA Control Network [FL-net(OPCN-2)] FL311/FL312 Module Operation Manual
Table 8-1 ULS value
RUN
STOP
Table 8-2 LKS value
No scan transmission error
Scan transmission error
Scan transmission error
ULS
LKS