6 F 3 B 0 3 6 4
124
Semaphore register Register allocation
0104H BS output data semaphore D0095
0105H Output data semaphore D0096
0106H Input data semaphore (read) D0097
0106H Input data semaphore (write) D0098
Work register
Bit strobe output data semaphore address store RW110
Bit strobe output data semaphore data length store RW111
Output data semaphore address store RW112
Output data semaphore data length store RW113
Input data semaphore address store RW114
Input data semaphore data length store RW115
RAS information read address store RW116
RAS information read data length store RW117
Storing request mode for operation mode control request D1690
Polling input data top address D2502
Number of polling input data words D2503
Polling output data top address D2504
Node address = 1
Number of polling output data words D2505
Polling input data top address D2538
Number of polling input data words D2539
Polling output data top address D2540
Node address = 6
Number of polling output data words D2541
BS input data top address D2548
Node address = 8
Number of BS input data words D2549
Polling input data top address D2622
Number of polling input data words D2623
Polling output data top address D2624
Node address = 20
Number of polling output data words D2625
BS input data top address D2632
Node address = 22
Number of BS input data words D2633
Remarks
• This sample program performs loopback check of data transmitted to FLEX I/O.
• R0073 in the sample program on the next page indicates the startup relay for asynchronous data
input/output.
• This sample program requires the programs stated in "5.2.3 Reset Request", "5.2.4/5.2.5
Parameter Setting Request", and "5.2.6 Operation Mode Control Request."
• This program allows the WRITE/READ instructions to write/read output and input data for
individual slave devices. Besides these performances, input/output data can be read/written in
batch processing (maximum 128 words). This method allows to reduce the number of
READ/WRITE executions, resulting in a shorter execution time for the ladder program.