Mitsubishi FX3G-485-BD - Page 22

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FX Series PLC User's Manual - Data Communication Edition
Table of Contents
11. Troubleshooting F-81
11.1 Checking FX PLC Version Applicability ...................................................................................F-81
11.2 Checking Communication Status Based on LED Indication ....................................................F-81
11.3 Checking Installation................................................................................................................F-81
11.4 Checking Sequence Program ..................................................................................................F-82
11.4.1 Checking communication port settings (in FX3G, FX3U and FX3UC PLCs) .............................F-83
11.5 Checking the Absence/Presence of Errors ..............................................................................F-83
12. Related Data F-84
12.1 Related Device List (RS Instruction) ........................................................................................F-84
12.2 Details of related devices (RS instruction) ...............................................................................F-85
12.2.1 Serial communication error [M8063].........................................................................................F-85
12.2.2 Communication setting keep [M8120] ......................................................................................F-85
12.2.3 Sending wait flag [M8121] ........................................................................................................F-85
12.2.4 Sending request [M8122] .........................................................................................................F-85
12.2.5 Receiving complete flag [M8123] .............................................................................................F-86
12.2.6 Carrier detection flag [M8124] ..................................................................................................F-86
12.2.7 Time-out check flag [M8129] ....................................................................................................F-86
12.2.8 Serial communication error code [D8063] ................................................................................F-87
12.2.9 Communication format setting [D8120] ....................................................................................F-88
12.2.10 Amount of remaining send data [D8122] ................................................................................F-88
12.2.11 Amount of data already received [D8123] ..............................................................................F-89
12.2.12 Header [D8124] ......................................................................................................................F-89
12.2.13 Terminator [D8125].................................................................................................................F-89
12.2.14 Time-out time setting time [D8129].........................................................................................F-89
12.2.15 Communication parameter display [D8405] ...........................................................................F-89
12.2.16 Operation mode display [D8419]............................................................................................F-90
12.3 Related Devices (RS2 Instruction)...........................................................................................F-90
12.4 Details of Related Devices (RS2 Instruction) ...........................................................................F-91
12.4.1 Serial communication error [M8062, M8063 and M8438].........................................................F-91
12.4.2 Sending wait flag [M8371, M8401 and M8421] ........................................................................F-92
12.4.3 Sending request [M8372, M8402 and M8422] .........................................................................F-92
12.4.4 Receiving complete flag [M8373, M8403 and M8423] .............................................................F-92
12.4.5 Carrier detection flag [M8404 and M8424] ...............................................................................F-93
12.4.6 Data set ready (DSR) flag [M8405 and M8425] .......................................................................F-93
12.4.7 Time-out check flag [M8379, M8409 and M8429] ....................................................................F-93
12.4.8 Serial communication error code [D8062, D8063 and D8438] .................................................F-94
12.4.9 Communication format setting [D8370, D8400 and D8420] .....................................................F-95
12.4.10 Amount of remaining send data [D8372, D8402 and D8422].................................................F-96
12.4.11 Amount of data already received [D8373, D8403 and D8423] ...............................................F-96
12.4.12 Communication parameter display [D8375, D8405 and D8425] ............................................F-96
12.4.13 Time-out time setting [D8379, D8409 and D8429] .................................................................F-96
12.4.14 Header [D8380, D8381, D8410, D8411, D8430 and D8431] .................................................F-97
12.4.15 Terminator [D8382, D8383, D8412, D8413, D8432 and D8433]............................................F-97
12.4.16 Receiving sum (receive data) [D8384, D8414 and D8434] ....................................................F-98
12.4.17 Receiving sum (calculation result) [D8385, D8415 and D8435].............................................F-98
12.4.18 Sending sum [D8386, D8416 and D8436]..............................................................................F-98
12.4.19 Operation mode display [D8389, D8419 and D8439].............................................................F-99
12.5 ASCII Code Table ..................................................................................................................F-100