
B-63434EN/02 DESCRIPTION 3.MESSAGE TRANSMISSION
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Table 3-2 Transmit Interface Items
Interface item Description Direction
Transmission
request/response
flag(Note 1)
Flag set by the user program to request message
transmission, and set by the CNC to post the reception of
a response message or the occurrence of an error.
0001h: The user program requests message
transmission.
8000h: The system posts the reception of a
normal response message.
The system posts the transmission of a
normal transparent message.
8100h and up: The system posts a request message
format error.
8200h and up: The system posts a request message
transmission error.
8300h and up: The system posts the reception of an
abnormal response message.
8800h: The system posts the acceptance of
cancellation from the user program.
U→S
S→U
Request status
(R_STS)
Status for checking if a request message has been
delivered.
01h: A request message has been delivered to the
server normally.
02h: Server buffer file
03h: The server is not initialized yet.
05h: Serial number/version number error
06h: Format error
S→U
Response status
(M_RLT)
Status for checking a response message
00h: Normal response
01h: Abnormal response
02h: Server service not supported
S→U
Cancel flag
(Note 2)
Set a value other than 0 for service cancellation before a
message responding to a transmission request is
returned. The purpose of this cancellation is just to allow
the system to accept the next transmission request. This
cancellation is not intended to cancel message
transmission with the FL-net function.
U→S
Destination node
number
Message transmission destination node number U→S
Message section Area for setting a message transaction code, parameters,
and so forth. The information set in this area depends on
the type of message transmission service.
U→S
S→U
The column of direction in the table above indicates whether each
item is posted from the user program to the system (U→S) or is
posted from the system to the user program (S→U).