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9-3
Chapter 9: Message transfers
9
From the previous page
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2 Setting transmission buffer (set the sending details)
Specify the [information section] and [data section] to be used for sending messages to the
transmission buffer (addresses +2000 to 3777(8), +4040 to 4055(8)).
(Transmission buffer Next page.)
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3 Execute a transmission
Write an 01(H) at address +301 in the communication control area and the JW-50FL will send the
contents of the transmission buffer [information section] and [data section] to the destination
node. After sending the message, the details in the [data section] will be cleared.
Settings in the communication control area
Enter the top address for the communication control area. The area (address +000 to 301(8)) will
then be allocated. Use the parameter addresses 30 to 32(8) to enter the top address.
When receive data
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4 Receive (received to transmission buffer)
The received data from a node are stored in the transmission buffer (address +0000 to 1777(8),
+4000 to 40015(8)).
Communication
control address
(8)
Detail
+301 Execute sending data
(Communication control area See page 10-1.)
Transmission
buffer address
(8)
Details
+2000
Sending [data section]
to
+3777
+4040 Node number of destination node.
Sending
[information section]
+4041 Response message type (fixed to 00
(H)
)
+4042 to 4043 Message (request) transaction code.
+4044 to 4047 Top address of the virtual address space.
+4050 to 4051
Data length requesting to the virtual address
space (word/byte).
+4052 Current fragment block number (fixed to 01
(H)
)
+4053 Total fragment block number (fixed to 01
(H)
)
+4054 to 4055 Current block length (byte)
Transmission
buffer address
(8)
Details
+0000
Receiving [data section]
to
+1777
+4000 Node number of data sending node.
Sending
[information section]
+4001 Response message type (fixed to 00
(H)
)
+4002 to 4003 Message (response) transaction code.
+4004 to 4007 Top address of the virtual address space.
+4010 to 4011
Data length requesting to the virtual address
space (word/byte).
+4012 Current fragment block number (fixed to 01
(H)
)
+4013 Total fragment block number (fixed to 01
(H)
)
+4014 to 4015 Current block length (byte)