Hitachi S10mini User Manual page 107

(b) Message transmission request by mathematical/logical function
A mathematical/logical function is called from a ladder program to issue a message request
to the FL.NET module for data exchange purposes. The mathematical/logical function for
the main module/submodule is available. The parameter specified at mathematical/logical
function startup dictates the message processing to be requested.
For the S10mini, it is necessary to register the mathematical/logical function for the main
module/sub-module beforehand with the [FL.NET For Windows®] to use the
mathematical/logical function in a ladder program. For the S10V, it is not required because
the mathematical/logical function is already registered in the ladder tool.
For the procedure for registering the FL.NET module mathematical/logical function, See
"5.6 Operating Method."
Ladder program
As is the case with the C mode handler, the mathematical/logical function merely issues a
request to the FL.NET module and then terminates the processing.
After receipt of a request, the FL.NET module sets the "user request processing in progress"
bit in the self-node status flag, and resets it at the end of the processing.
To verify the end of the message processing after issuance, check the self-node status flag.
The status indicates the end of the processing.
After a request is issued by the mathematical/logical function, do not make another message
request until the "user request processing in progress" bit is resets. If any message request
is issued before the bit is reset, it is not processed because another message is being
processed (the "message processing already in progress" error code is set at an error code
storage address).
After the "user request processing in progress" bit is reset, enter the status prevailing after
the end of the processing at an error code storage address specified at mathematical/logical
function startup.
FLCM
S10mini
F H160000
FLCS
F
H180000
5-55
5 USER GUIDE
S10V
FW000
DW000