Mitsubishi FX3U-232-BD User Manual page 22

FX Series PLC User's Manual - Data Communication Edition
11. Troubleshooting
11.1 Checking FX PLC Version Applicability ...................................................................................F-72
11.2 Checking Communication Status Based on LED Indication ....................................................F-72
11.3 Checking Installation ................................................................................................................F-72
11.4 Checking Sequence Program ..................................................................................................F-73
11.4.1 Checking communication port settings (in FX
11.5 Checking the Absence/Presence of Errors ..............................................................................F-74
12. Related Data
12.1 Related Device List (RS Instruction) ........................................................................................F-75
12.2 Details of related devices (RS instruction) ...............................................................................F-76
12.2.1 Serial communication error [M8063].........................................................................................F-76
12.2.2 Communication setting keep [M8120] ......................................................................................F-76
12.2.3 Sending wait flag [M8121] ........................................................................................................F-76
12.2.4 Sending request [M8122] .........................................................................................................F-76
12.2.5 Receiving complete flag [M8123] .............................................................................................F-77
12.2.6 Carrier detection flag [M8124] ..................................................................................................F-77
12.2.7 Time-out check flag [M8129] ....................................................................................................F-77
12.2.8 Serial communication error code [D8063] ................................................................................F-78
12.2.9 Communication format setting [D8120] ....................................................................................F-79
12.2.10 Amount of remaining send data [D8122] ................................................................................F-79
12.2.11 Amount of data already received [D8123] ..............................................................................F-80
12.2.12 Header [D8124] ......................................................................................................................F-80
12.2.13 Terminator [D8125].................................................................................................................F-80
12.2.14 Time-out time setting time [D8129].........................................................................................F-80
12.2.15 Communication parameter display [D8405] ...........................................................................F-80
12.2.16 Operation mode display [D8419] ............................................................................................F-81
12.3 Related Devices (RS2 Instruction) ...........................................................................................F-81
12.4 Details of Related Devices (RS2 Instruction) ...........................................................................F-82
12.4.1 Serial communication error [M8063 and M8438]......................................................................F-82
12.4.2 Sending wait flag [M8401 and M8421] .....................................................................................F-82
12.4.3 Sending request [M8402 and M8422] ......................................................................................F-83
12.4.4 Receiving complete flag [M8403 and M8423] ..........................................................................F-83
12.4.5 Carrier detection flag [M8404 and M8424] ...............................................................................F-83
12.4.6 Data set ready (DSR) flag [M8405 and M8425] .......................................................................F-83
12.4.7 Time-out check flag [M8409 and M8429] .................................................................................F-84
12.4.8 Serial communication error code [D8063 and D8438]..............................................................F-84
12.4.9 Communication format setting [D8400 and D8420]..................................................................F-85
12.4.10 Amount of remaining send data [D8402 and D8422] .............................................................F-86
12.4.11 Amount of data already received [D8403 and D8423]............................................................F-86
12.4.12 Communication parameter display [D8405 and D8425].........................................................F-86
12.4.13 Time-out time setting [D8409 and D8429]..............................................................................F-86
12.4.14 Header [D8410, D8411, D8430 and D8431] ..........................................................................F-87
12.4.15 Terminator [D8412, D8413, D8432 and D8433].....................................................................F-87
12.4.16 Receiving sum (receive data) [D8414 and D8434].................................................................F-87
12.4.17 Receiving sum (calculation result) [D8415 and D8435]..........................................................F-88
12.4.18 Sending sum [D8416 and D8436] ..........................................................................................F-88
12.4.19 Operation mode display [D8419 and D8439] .........................................................................F-88
12.5 ASCII Code Table ....................................................................................................................F-89
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and FX PLCs) ........................................F-73
3U 3UC
Table of Contents
F-72
F-75