Yaskawa JAPMC-MC2303-E - Manual (Page 118)

6
Message Send and Receive Functions
6.5 Programming Example
6.5.1 Word Block Data Read (Client)
6-33
6.5 Programming Example
Cyclic transmission is performed automatically if cyclic transmission setting (FL-net transmission definition) is made.
For message transmission, it is necessary to create a user program using the message send and receive functions (MSG-
SND function and MSG-RCV function).
The following shows a programming example using the message send/receive function.
ΠWhen a server receives either of the following message requests from a client, it is not necessary to create the user pro-
gram.
Network parameter read, profile read, log data read and clear, message loopback
6.5.1 Word Block Data Read (Client)
The following shows an example where the 262IF-01 acts as an FL-net message client to request a word block data
read with a data size of 512 words from a virtual address 0 to the remote device (node number 1).
( 1 ) MSG-SND Function Setting
The MSG-SND function is set as follows:
( 2 ) Parameter Setting
The parameter list from DA00000 is set as follows.
ΠFor register reference method and notes at register input, refer to 6.4 Displaying a Register List and Notes at Regis-
ter Input on page 6-30.
When the Execute (DB000201) is set to ON (=1) from the above settings, the 262IF-01 sends a word block data read
request (transaction code: 65005).
When a word block data read response (transaction code: 65205) is received from a remote node, the 262IF-01 writes
read data to MW00000 to MW000511 (512 words).
ΠFor transaction codes, refer to 6.1.5 ( 5 ) PARAM05: Data Address on page 6-13.
Transmission device = FL-net
Protocol type = MEMOBUS
Circuit number = 1
Transmission buffer channel number = 1
Parameter list leading address
= DA00000
(DW00000 to DW00016 is used.)
Parameter list
F · · · · · · · 0
Register Contents
Setting
Value
Remarks
PARAM00 DW00000 Processing result –
PARAM01 DW00001 Status –
PARAM02 DW00002 Remote node number 1
PARAM03 DW00003 Option 0 Not used
PARAM04 DW00004 Function code 09H Word block data read
PARAM05 DW00005 Data address 0 FL-net virtual address
PARAM06 DW00006 Data size 512
PARAM07 DW00007
Remote CPU number
(Address upper word)
0
When the destination node is the
262IF-01, 0 must be set.
PARAM08 DW00008 Coil offset 0 Not used
PARAM09 DW00009 Input relay offset 0 Not used
PARAM10 DW00010 Input register offset 0 Not used
PARAM11 DW00011 Holding register offset 0
PARAM12 to 16
DW00012 to
DW00016
Reserved by the system 0