7.4.4 Precautions....................................................................................................................................... 7- 21

7.5 Registration frames................................................................................................................................. 7- 22

7.5.1 List of default registration frames..................................................................................................... 7- 23

7.5.2 Details of user registration frames................................................................................................... 7- 25

8. OTHER FUNCTIONS

8.1 Canceling data communication to an external device ............................................................................ 8- 1

8.2 Forcibly completing reception .................................................................................................................. 8- 3

8.3 Flow control .............................................................................................................................................. 8- 6

8.4 ASCII-BIN conversion of transmission data........................................................................................... 8- 10

8.5 RW update function ................................................................................................................................ 8- 12

8.6 Initializing the R2 ..................................................................................................................................... 8- 15

8.7 Clearing the OS reception area .............................................................................................................. 8- 16

8.8 Registering and initializing the R2 EEPROM ......................................................................................... 8- 19

8.9 Controlling the RS-232-C signal ............................................................................................................. 8- 22

8.9.1 Correspondence of RS-232-C control signal and remote input/output signal ............................... 8- 22

8.9.2 Precautions for using RS-232-C control signal read/write function................................................ 8- 23

8.10 Confirming the R2 switch states and software version........................................................................ 8- 24

9. PROGRAM EXAMPLES

9.1 Conditions for program examples ........................................................................................................... 9- 1

9.2 Example of program for using buffer memory automatic update function ............................................. 9- 2

9.2.1 When using FROM/TO command with ACPU / QCPU-A (A mode) ............................................... 9- 2

9.2.2 When using dedicated commands with ACPU / QCPU-A (A mode) .............................................. 9- 6

9.2.3 When using dedicated commands with QCPU (Q mode) / QnACPU............................................ 9- 11

9.2.4 When using the FROM/TO commands with ACPU / QCPU-A (A mode)

(Three R2 modules connected) ...................................................................................................... 9- 14

9.3 Example of program for using transmission/reception buffer................................................................ 9- 28

9.3.1 When using FROM/TO command with ACPU / QCPU-A (A mode) .............................................. 9- 28

9.3.2 When using dedicated commands with ACPU / QCPU-A (A mode) ............................................. 9- 37

9.3.3 When using dedicated commands with QCPU (Q mode) / QnACPU............................................ 9- 43

10. TROUBLESHOOTING

10.1 Error codes........................................................................................................................................... 10- 1

10.1.1 Error code storage area ................................................................................................................ 10- 1

10.1.2 List of error codes.......................................................................................................................... 10- 2

10.2 Confirming the error with the LED ....................................................................................................... 10- 5

10.3 Examples of trouble in general-purpose input circuit.......................................................................... 10- 7

10.4 Troubleshooting per symptom ............................................................................................................. 10- 9

10.5 Troubleshooting when the master station's ERR. LED flashes......................................................... 10- 10

APPENDIX

Appendix 1 Outline dimension drawing ............................................................................................Appendix- 1

INDEX

A - 8

8- 1 to 8- 24

9- 1 to 9- 48

10- 1 to 10- 12

Appendix- 1 to Appendix- 2