Mitsubishi Electric MELSEC FX Series User Manual page 12

FX -4LC User's Manual
3U
8.2.54 [BFM#232] Cooling method setting ........................................................................................... 112
8.2.55 [BFM#233] Alarm dead band setting ......................................................................................... 113
8.2.56 [BFM#234] Alarm delay count ................................................................................................... 114
8.2.57 [BFM#235] Number of times of heater disconnection alarm delay/
Number of times of current error detection when output is OFF delay ................................... 115
8.2.58 [BFM#236] Temperature rise completion range setting ............................................................ 115
8.2.59 [BFM#237] Temperature rise completion soak time.................................................................. 116
8.2.60 [BFM#238] CT monitor method switch ...................................................................................... 117
8.2.61 [BFM#239] CT ratio setting........................................................................................................ 117
8.2.62 [BFM#240, #241] Control mode switch ..................................................................................... 118
8.2.63 [BFM#242, #243] SV tracking selection .................................................................................... 119
8.2.64 [BFM#244, #245] Cascade ON/OFF ......................................................................................... 120
8.2.65 [BFM#246, #247] Cascade gain ................................................................................................ 120
8.2.66 [BFM#248, #249] Cascade bias ................................................................................................ 121
8.2.67 [BFM#250, #251] Cascade monitor........................................................................................... 121
8.2.68 [BFM#252] Set value range error address ................................................................................ 122
8.2.69 [BFM#253] Error reset command .............................................................................................. 122
8.2.70 [BFM#254] Set value backup command.................................................................................... 123
8.2.71 [BFM#255] Initialization command ............................................................................................ 124
9. Program Examples
9.1 Reading/Writing Buffer Memory .................................................................................................. 126
9.1.1 Assigned unit number.................................................................................................................. 126
9.1.2 How to read/write from/to buffer memory .................................................................................... 126
9.2 Example of a Program for PID Control........................................................................................ 131
9.2.1 System configuration ................................................................................................................... 131
9.2.2 Conditions of operation................................................................................................................ 131
9.2.3 Device assignments .................................................................................................................... 132
9.2.4 Sequence program ...................................................................................................................... 133
9.3 Example of a Program for Heating/Cooling PID Control ............................................................. 136
9.3.1 System configuration ................................................................................................................... 136
9.3.2 Conditions of operation................................................................................................................ 136
9.3.3 Device assignments .................................................................................................................... 137
9.3.4 Sequence program ...................................................................................................................... 138
10. Troubleshooting
10.1 Troubleshooting Procedure....................................................................................................... 142
10.1.1 How to reset an error................................................................................................................. 142
10.2 Diagnostics on the PLC Main Unit ............................................................................................ 143
10.2.1 POWER (POW) LED [on/flashing/off]........................................................................................ 143
10.2.2 BATT (BAT) LED [on/off] ........................................................................................................... 143
10.2.3 ERROR (ERR) LED [on/flashing/off] ......................................................................................... 144
Appendix A: Version Information
Appendix A-1 Version Information ............................................................................................ 145
Appendix A-1-1 Version check method ................................................................................................ 145
Appendix A-1-2 Version upgrade history.............................................................................................. 145
Warranty................................................................................................................................. 147
Revised History ..................................................................................................................... 148
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