2) Overflow and Underflow in Binary Operations (16-bit or 32-bit) ........198
3) Overflow and Underflow in BCD Operations (4-digit or 8-digit).........199
CHAPTER 7:
TROUBLESHOOTING
7-1.
Self-diagnostic Function ....................................................................................202
1. Operation Monitor LEDs When an Error Occurs.........................................202
2. Operation Status When an Error Occurs ......................................................203
1) Duplicated Output Error (Total-check Error) ........................................203
2) Battery Error (Self-diagnostic Error) .....................................................203
3) Operation Error (Self-diagnostic Error) .................................................203
7-2.
Troubleshooting .................................................................................................204
1. Points to be Checked When an Error Occurs ...............................................204
■
When an ERR. LED is ON.....................................................................205
■
When an ALARM LED is ON ...............................................................209
■
When all LEDs are OFF.........................................................................210
■
Diagnosing output malfunction ..............................................................211
■
When “PLC=COMM. ERR” is displayed on the NPST-GR screen ......214
■
When “PROTECT ERROR” is displayed..............................................215
7-3.
Maintenance .......................................................................................................216
1. Preventive Maintenance ...............................................................................216
2. Replacement of Backup Battery ...................................................................216
1) Battery Life ............................................................................................216
2) How to Replace Backup Battery ............................................................217
3. Removable Terminal ...................................................................................217
CHAPTER 8:
APPENDIX
8-1.
FP1 I/O Allocation Table ...................................................................................220
8-2.
Table of Memory Areas .....................................................................................221
8-3.
Table of Special Internal Relays ........................................................................223
8-4.
Table of Special Data Registers .........................................................................226
8-5.
System Registers ................................................................................................230
1. What are System Registers ...........................................................................230
2. Table of System Registers ............................................................................232
8-6.
Versions of Programming Tools ........................................................................241
1. Differences Between NPST-GR Ver. 2.4 and 3.1 ........................................241
2. Differences Between the FP Programmer and FP Programmer II ................243
8-7.
FP1 CPU Version 2.7 .........................................................................................245
8-8.
FP1 Modem Communication .............................................................................246
1. Using the Programming Tool Port (RS422) .................................................246
2. Using the RS232C Port.................................................................................248
3. System Configuration: One Computer and Two or More Programmable
Controllers ....................................................................................................251
4. NPST-GR Settings........................................................................................252
8-9.
Terminology .......................................................................................................254
8-10. Product Types.....................................................................................................260
1. Control Units ................................................................................................260
2. Expansion Units............................................................................................262
3. Intelligent Units ............................................................................................263
4. Link Units .....................................................................................................263
5. Programming Tools ......................................................................................263
6. Maintenance Parts.........................................................................................265
INDEX....................................................................................................................................
266
RECORD OF CHANGES ....................................................................................................
271
CONTENTS
Содержание FP1
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