Hitachi FL.NET User Manual page 149

5 USER GUIDE
[LPU/CMU01-side program flowchart]
Transparent-message
transmission in
progress
① The self-node status transfer area is checked. When the contents of the checked area
are 0x0080, the system concludes that the self-node has participated in the network.
② A request for the transmission of a transparent message is issued to the node 2 module.
③ The C mode handler checks a return code to determine whether the request is accepted
normally. (The request is accepted normally if the return code is 0 or not accepted
normally if the return code is -1.)
④ The self-node status transfer area is checked to wait until bit 2
15
(Bit 2
START
①
Has node 1 participated
in the network?
②
Transmission of a transparent
message
toukasend
③
Return code?
④
Self-node status check
END
of the self-node status flag is the "user request processing in progress" bit.)
No
Yes (cyclic
transmission started)
Abnormal
Normal
Transparent-message
transmission ended
5-94
15
(0x8000) turns OFF.