Mitsubishi A Series - Page 9

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9. COMMUNICATIONS WlTH A COMPUTER IN THE NO-PROTOCOL MODE . .9 - 1 - 9 - 18
9.1
BasicsofthebPrdocdMode ........................................... 9-1
9.2
Handshakel/OSinals .................................................. 9-2
9.3
ProgrammingHints ...................................................... 9-3
9.3.2
Precautions during data communications ............................. .9 - 4
9.4
Basic Program to Readmrite Buffer Memory ................................. 9 - 6
9.3.1
Towritedatatothespecialuseareainbuffermemory .................... 9-3
9.5
ReceivingDataintheN~ocolMode(ExtemalDevice-.AJ71C24) ........... 9-9
9.6
SendingDataintheNo-PratocdMode(A171C24~ExtwnalDevice) ........... 9-15
10.
COMMUNICATIONS IN THE BIDIRECTIONAL MODE ................. 10 - 1 10 - 26
10.1
10.2
10.3
10.4
10.5
10.6
10.7
10.8
10.9
BidirectionalModeBasics ............................................... 10-2
Handshake Si- and Buffer Memory .................................... 10 - 4
ProgrammingHints ...................................................... 10-8
10.3.1
System configuration and commuflications mode for bidirectional
modecommunications
........................................... 10-8
10.3.3
Precautions during data communications ........................... 10 - 10
Bidirectiod Control Procedure Basics ................................... 10- 12
Bidirectional Communicatii Basics ..................................... 10 - 13
10.3.2
Towritedatatoaspecialappkatiiareainbuffermemory ........... 10-9
10.5.1 COntrd~dOCQk
............................................... 10-13
Processing an A171 C24 for Simuttarmus Send in FulCDuplex Mode .......... 10 - 17
Receiving Data in the Bidirectional Mode (Computer + A171 C24) ............. 10 - 20
Transmitting Data in the Bidirectional Mode (A171 C24 -. Computer) ........... 10 - 23
10.5.2 Messageformat ................................................ 10-14
Basic Program to ReadMlrite Buffer Memory ............................... 10- 18
11. TROUBLESHOOTING ........................................... 11-1 -11-9
11.1 NAKErrorCodeswithDedicatedProtocds ................................. 11 -1
11.2 BidirectionalModeErrorCodes .......................................... 11 -3
11.3
TrouMeshoatingOFF ................................................... 11-4
11.3.1
TrouMeshootingflowchart ........................................ 11-4
11.3.3
Whentheneutralstatedoesnotchangeordataisnatreceived ......... 11 -6
11.3.4 Whenthe2-C/N(LEDNo.16)or4-CM(LEDNo.20)istumedON ....... 11-7
11.3.2
Whenthe'RUN'LEDistumedOFF ................................ 11-5
11.3.5 Whencommunicatiisometimesfails ............................. 11 -8
11.3.6 Whenundecodeddataistransmitted ............................... 11 -9
APPENDICES .................................................. APP-1 - APP-27
APPENDIX
1 Precautions Concerning Compatibility and the Use of
Existing Programs Prepared for the AJ71C24 Computer Link Module ...... APP - 1
1.1
Compatibility ......................................................... APP-1
1.2 Precautions when Using Existing Programs ............................... APP - 1
1.3 Function Comparison ................................................. APP-2
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