4 FUNCTIONS
4.2 Cyclic Transmission
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4
Station-based block data assurance
Integrity of the cyclic data is assured for each station by handshake between the FX5 CPU module and the FX5-CCLGN-MS
for a link refresh.
Setting
Set station-based block data assurance under "Supplementary Cyclic Settings" in "Application Settings" of the master station.
( Page 137 Application Settings)
Once this setting is enabled on the master station, integrity of the data for all stations is assured for each station.
Access to link devices
During a link refresh, data is assured for each station as shown below.
Interlock program
Data of more than 32 bits can be assured without using the station-based block data assurance setting. Use either of the
following methods for interlocking:
• Data assurance by handshake of the remote I/O
• Data assurance by handshake of the remote register
Data assurance by handshake of the remote I/O
The following shows an example of sending data in W0 to W3 of the master station (station No.0) to W100 to W103 of the
local station (station No.1). (X1000 and Y1000 are used for a handshake to the FX5 CPU module.)
• Data flow
Station No.1
Station No.2
Station No.3
Station No.4
Data assurance
Data assurance
Data assurance
Data assurance
Data assurance
Data assurance
Data assurance
Data assurance
Station No.1
Station No.2
Station No.3
Station No.4
FX5 CPU module
Device
FX5-CCLGN-MS
Link device
Link refresh
FX5-CCLGN-MSFX5-CCLGN-MS
No.0 No.1
SET Y1000
X1000
Y1000
RX0
RY0RY0
RWw0
RWr0
RWw0
RWr0
RX0
Y1000
W0
W100
W0
W100
X1000
X1000
Cyclic transmission
Link refresh
Send
request
FX5
CPU module Master station
FX5
CPU moduleLocal station
Send data (W) Receive data (W)
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