Hitachi FL.NET User Manual page 151

5 USER GUIDE
[LPU/CMU02 side program flowchart]
Transparent-message
reception in progress
① The transparent-type reception flag area is checked. When the contents of the
checked area are 0x4000 and bit 2
(set), the system concludes that there is a transparent message from node 1. (Starting
address bit 2
② A request for the reception of a transparent message is issued.
③ The C mode handler checks the 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
OFF (reset). (Bit 2
progress" bit.)
START
①
Data received from
node 1?
Transparent message
received
②
Transparent-message
reception
toukaread
③
Return code?
Normal
④
Self-node status
check
Transparent-message
reception ended
END
14
of the transparent-type reception flag is the node 1 reception bit.)
15
of the self-node status flag is the "user request processing in
No transparent
message received
Abnormal
14
within the self-node status transfer area is ON
5-96
15
(0x8000) is turned