Yaskawa JAPMC-MC2303-E User Manual
Page 113
6.2 Message Receive Function
6.2.6 Relationship among the Data Address, Data Size, and Offset in the MSG-RCV Function
6-28
6.2.6 Relationship among the Data Address, Data Size, and Offset in the MSG-RCV
Function
When the Message Is Received under Pro-Typ=1 (MEMOBUS)
The following shows an offset address (M_ADD) for a virtual address space sent from other FL-net equipment to the
262IF-01.
When the 262IF-01 receives the above virtual address, the 262IF-01 stores a CPU number and a data address in
PARAM07 and PARAM05 respectively, and then writes to or reads from the data area shown in the following figure.
When the Message Is Received under Pro-Typ=2 (Non-procedure Protocol)
Because a message using a non-procedure protocol does not use a virtual address, the 2602IF-01 stores the received
data in an area specified by the holding register offset (PARAM12) if it receives an FL-net message while the MSG-
RCV is activated by Pro-Typ=2 (non-procedure protocol 1). At this time, the transaction code is stored in the leading
register and FL-net message data (received data) in the subsequent register. The data size including one word for the
transaction code is stored in the data size (PARAM06).
When the 262IF-01 has sent a message “remote device not supported” as a client and has received its response
message, the processing result of the MSG-RCV function is “normal”. However, two words consisting of a transac-
tion code (response) and an unsupported error code “0FFFF” are stored in the data part.
MW
Transaction code
MW + 1 0FFFF
31
16
15
12
11
0
0
M_ADD
CPU number (0)
Data address
(0 to 65534: MW00000 to MW65534)
Data
Holding register offset
㧔PARAM11㧕
MW00000
MW
*****
31
16
15
12
11
0
0
M_ADD
CPU number (0)
Data address
(0 to 65534: MW00000
to MW65534)
CPU number
(PARAM07: Specified by sending station)
Data address
(PARAM05: Specified by
sending station)
Data size
(PARAM06: Specified by
sending station)
Data
Holding register offset
㧔PARAM12㧕
Data size
(PARAM06: Specified
by sending station)
MW00000
MW
*****
FL-net
message data
MW
*****
MW
*****
+1
Transaction code