Mitsubishi Electric QJ71C24N User Manual page 16

11.3.3 No response message is returned even though the external device transmitted a message
and the "RD" LED blinked ........................................................................................................ 11- 38
11.3.4 Transmission request does not make the "SD" LED blink ...................................................... 11- 39
11.3.5 Read request signal does not turn ON even though the external device transmitted
a message and the "RD" LED was blinking ............................................................................ 11- 40
11.3.6 The CPRTCL instruction execution is not completed although the "RD" LED blinked .......... 11- 41
11.3.7 Communication error "NAK"..................................................................................................... 11- 42
11.3.8 Communication error "C/N" ...................................................................................................... 11- 42
11.3.9 Communication error "P/S" ...................................................................................................... 11- 43
11.3.10 Communication error "PRO." ................................................................................................. 11- 44
11.3.11 Communication error "SIO" .................................................................................................... 11- 45
11.3.12 Communication error "CH1 ERR." or "CH2 ERR." ............................................................... 11- 46
11.3.13 Communication is intermittent ................................................................................................ 11- 49
11.3.14 Undecidable data are transmitted or received ...................................................................... 11- 51
11.3.15 Whether the communication error is caused on the Q series C24 or external device is unclear
................................................................................................................................................. 11- 52
11.3.16 Communication is not available via the modem .................................................................... 11- 53
11.3.17 Communication is not available with the ISDN sub-address ................................................ 11- 54
11.3.18 Periodic transmission is not performed normally .................................................................. 11- 54
11.3.19 Condition agreement transmission is not performed normally ............................................. 11- 54
11.3.20 Data cannot be received due to by an interrupt program ..................................................... 11- 54
11.3.21 Data cannot be written to the flash ROM .............................................................................. 11- 55
11.3.22 Troubleshooting on protocol setting data reading/writing ..................................................... 11- 56
11.3.23 The "ERR" LED is lit ............................................................................................................... 11- 57
APPENDICES
Appendix 1 Functional Improvements of the Q Series C24 ................................................................ App.- 1
Appendix 1.1 Comparison of Q series C24/GX Configurator-SC/GX Works2 ............................... App.- 1
Appendix 1.2 Precautions when updating the module from function version A to B...................... App.- 7
Appendix 1.3 Precautions when replacing the QJ71C24(-R2) with the QJ71C24N(-R2/R4) ........ App.- 7
Appendix 2 QnA/A Series Module ....................................................................................................... App.- 8
Appendix 2.1 Functional comparison with the Q series C24 and the QnA/A series modules ....... App.- 8
Appendix 2.2 Using programs designed for the QC24 (N) and installing the Q series C24
into existing systems .................................................................................................. App.- 10
Appendix 2.2.1 Using programs designed for the QC24 (N) .................................................. App.- 10
Appendix 2.2.2 Installing on existing systems ........................................................................ App.- 11
Appendix 2.3 Using programs designed for the computer link module and installing
the Q series C24 into existing systems ..................................................................... App.- 12
Appendix 2.3.1 Using programs designed for the computer link module ............................... App.- 12
Appendix 2.3.2 Installing the Q series C24 into existing systems .......................................... App.- 15
Appendix 3 Processing Time ............................................................................................................... App.- 16
Appendix 4 ASCII-Code Table ............................................................................................................. App.- 19
Appendix 5 External Dimensions ......................................................................................................... App.- 20
Appendix 6 Interfaces ........................................................................................................................... App.- 22
Appendix 6.1 RS-232 interfaces used for the Q series C24 ........................................................... App.- 22
Appendix 6.2 Connection examples when using a converter ......................................................... App.- 22
Appendix 7 Communication Support Tool (MX Component) .............................................................. App.- 25
Appendix 7.1 Overview of MX Component ...................................................................................... App.- 25
Appendix 7.2 Usage procedure of MX Component ......................................................................... App.- 28
A - 14
App.- 1 to App.-63
A - 14