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1 CC-Link SYSTEM
(4) Intelligent device station communication
The intelligent device station is a station that can handle bit and word data.
Communication between a master station and an intelligent device station uses
two types of transmission methods: cyclic transmission and transient
transmission (refer to Section 8.1.4).
(a) Cyclic transmission
Signals for handshaking with the intelligent device station (positioning start,
positioning complete, etc.) are communicated using the remote input RX and
remote output RY. Numeric data (positioning start number, present feed
value, etc.) is communicated using remote registers RWw and RWr.
X
Y
W
W
Master station
Remote
register
RWw
Remote
register
RWr
Servo amplifier
Intelligent device station
Programmable
controller CPU
Automatic refresh
Automatic refresh
Automatic refresh
Automatic refresh
Remote
input
RX
Remote
output
RY
Remote
register
RWw
Remote
register
RWr
Remote
input
RX
Remote
output
RY
Link scan
Link scan
Link scan
Link scan
(b) Transient transmission
Reading (G(P).RIRD) or writing (G(P).RIWT) of buffer memory data in an
intelligent device station is available at any timing.
Master station
Programmable
controller CPU
Intelligent device station
Transient transmission
Transient
transmission
area
Transient transmission
G(P).RIWT
G(P).RIRD
Buffer memory
Summary of Contents for L26CPU-BT
Page 1: ......
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Page 32: ...3 5 3 5 3 SPECIFICATIONS ...
Page 51: ...4 2 4 2 4 PROCEDURE BEFORE OPERATION 4 ...
Page 61: ...6 4 6 4 6 INSTALLATION AND CONNECTION ...
Page 63: ...6 6 6 6 6 INSTALLATION AND CONNECTION 8 The connection method is shown below ...
Page 70: ...6 13 6 13 6 INSTALLATION AND CONNECTION ...
Page 72: ...6 15 6 15 6 INSTALLATION AND CONNECTION ...
Page 139: ...8 33 8 33 8 FUNCTIONS ...
Page 151: ...8 45 8 45 8 FUNCTIONS ...
Page 246: ...11 9 11 9 11 EXAMPLE OF COMMUNICATION BETWEEN THE MASTER STATION AND REMOTE DEVICE STATIONS ...
Page 311: ...13 2 13 2 13 COMMUNICATION BETWEEN THE MASTER STATION AND INTELLIGENT DEVICE STATIONS MEMO 13 ...
Page 321: ...14 10 14 10 14 EXAMPLE OF COMMUNICATION WHEN MOUNTING MODULES ON THE HEAD MODULE ...
Page 326: ...15 5 15 5 15 TROUBLESHOOTING To the next page ...
Page 327: ...15 6 15 6 15 TROUBLESHOOTING To the next page ...
Page 328: ...15 7 15 7 15 TROUBLESHOOTING ...
Page 329: ...15 8 15 8 15 TROUBLESHOOTING 2 Troubleshooting by status logging ...
Page 436: ...App 72 App 72 APPENDIXES 7 Operating procedure of the transmission speed test ...
Page 439: ...App 75 App 75 APPENDIXES MEMO ...
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