Hitachi S10mini User Manual page 157

[CPU02 or 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
system concludes that there is a transparent message from node 1. (Starting address bit
14
2 of the transparent-type reception flag is the node 1 reception bit.)
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
15
(reset). (Bit 2
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
within the self-node status transfer area is ON (set), the
of the self-node status flag is the "user request processing in progress"
5-105
5 USER GUIDE
No transparent
message received
Abnormal
15
(0x8000) is turned OFF