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D320 PLC User's Manual
Transfer Instruction Details ............................................................................................................................... 135
LDR, DLDR .............................................................................................................................................. 135
STO, DSTO ............................................................................................................................................... 137
MOV, FMOV ............................................................................................................................................ 139
BMOV, BFMV.......................................................................................................................................... 141
Block Processing Instruction Details ................................................................................................................. 142
FOR, DFOR, NEXT .................................................................................................................................. 142
JMP, LBL .................................................................................................................................................. 144
JMPS, JMPE.............................................................................................................................................. 145
CALL, SBR, RET...................................................................................................................................... 147
INT, RETI.................................................................................................................................................. 149
Special Instruction Details ................................................................................................................................. 150
INPR, OUTR ............................................................................................................................................. 150
WAT .......................................................................................................................................................... 152
END........................................................................................................................................................... 153
READ ........................................................................................................................................................ 154
WRITE ...................................................................................................................................................... 156
RMRD ....................................................................................................................................................... 158
RMWR....................................................................................................................................................... 159
RECV......................................................................................................................................................... 160
SEND......................................................................................................................................................... 161
RECVB...................................................................................................................................................... 162
SENDB ...................................................................................................................................................... 163
Chapter 7: Testing And Troubleshooting
165
Test Precautions................................................................................................................................................. 166
System Checks................................................................................................................................................... 166
Testing Procedures............................................................................................................................................. 168
Correcting Errors ............................................................................................................................................... 170
System Check ............................................................................................................................................ 170
Power Supply Check.................................................................................................................................. 171
Run Check ................................................................................................................................................. 172
Error Check................................................................................................................................................ 173
I/O Check................................................................................................................................................... 174
External Environment Check..................................................................................................................... 176
Troubleshooting, Maintenance and Inspection Tables....................................................................................... 177
Periodic Inspection and Preventive Maintenance ...................................................................................... 180
Chapter 8: Troubleshooting Noise Problems
181
Noise Occurrence............................................................................................................................................... 182
Types of Noise........................................................................................................................................... 182
Electrical Noise Fundamental Definitions ................................................................................................. 182
Sources of Noise ........................................................................................................................................ 183
Advised Installation Practices............................................................................................................................ 184
Shield the PLC........................................................................................................................................... 184
Proper Cable Selection .............................................................................................................................. 184
Ground the PLC......................................................................................................................................... 184
Isolation and Filtering Techniques..................................................................................................................... 185
Isolation ..................................................................................................................................................... 185
Filters......................................................................................................................................................... 186
Methods of Handling Large Voltage Spikes Such as Lightning........................................................................ 187
Surge Absorber .......................................................................................................................................... 187
Burying Wire ............................................................................................................................................. 187
Содержание D320 PLC
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