Download FX2N-16CCL-M CC-Link SYSTEM MASTER BLOCK USER`S

FX2N-16CCL-M CC-Link System Master Block
9.3
Programming 9
Link Special Relay/Register (SB/SW)
The data link status can be checked using the bit information (link special relay SB) and the
word information (link special register SW).
"SB" and "SW" represent the buffer memory information in the master block, and can be read
and written by the FROM/TO instruction.
- Link special relay (SB)
:Buffer memory addresses 5E0H to 5FFH
- Link special register (SW) :Buffer memory addresses 600H to 7FFH
9.3.1
Link special relay (SB) list
For the correspondence with the buffer memory, refer to Section 4.6.10.
Table 9.1:
Number
SB0000
SB0002
SB0004
SB0005
SB0008
Buffer memory
Number
Bit
5E0H
0
5E0H
5E0H
5E0H
5E0H
Name
Description
Data link restart
Restarts the data link which was stopped by SB0002.
OFF : Does not give restart specification.
ON : Gives restart specification.
2
Data link stop
Stops the data link in the host station.
(Use SB0000 to restart the data link.)
If the master station sets this relay to ON, the entire
system stops.
OFF : Does not give stop specification.
ON : Gives stop specification.
4
Request for
temporary error
invalid station
Determines stations specified by SW0003 to
SW0004 as temporary error invalid stations.
OFF : Does not give the request.
ON : Gives the request.
5
Cancels the stations specified by SW0003 to
Request for cancel
SW0004 from temporary error invalid stations.
of temporary error
OFF : Does not give the request.
invalid station
ON : Gives the request.
8
Request for line
test
Executes the line test to the stations specified by
SW0008.
OFF : Does not give the request.
ON : Gives the request.
Reads the parameter information on the actual
system configuration, and sets it to the parameter
information area.
OFF : Does not give the request.
ON : Gives the request.
Indicates the buffer access status.
OFF : Does not give the request.
ON : Gives the request.
SB0009
5E0H
9
Request for
parameter
verification test
SB0020
5E2H
0
Module status
9-6