5
FnIO MODBUS Adapter NA-9171, NA-9173
FnIO S-Series
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6.2.3. 3 (0x03) Read Holding Registers ..................................................................................................... 32
6.2.4. 4 (0x04) Read Input Registers ........................................................................................................... 33
6.2.5. 5 (0x05) Write Single Coil ................................................................................................................... 34
6.2.6. 6 (0x06) Write Single Register .......................................................................................................... 35
6.2.7. 8 (0x08) Diagnostics .............................................................................................................................. 36
6.2.8. 15 (0x0F) Write Multiple Coils ........................................................................................................... 38
6.2.9. 16 (0x10) Write Multiple Registers ................................................................................................. 39
6.2.10. 23 (0x17) Read/Write Multiple Registers ..................................................................................... 40
6.2.11. Error Response ......................................................................................................................................... 41
6.3.
MODBUS Special Register Map........................................................................................................ 42
6.3.1. Adapter Identification Special Register (0x1000, 4096) ......................................................... 42
6.3.2. Adapter Watchdog Time, other Time Special Register (0x1020, 4128) ......................... 43
6.3.3. Adapter Information Special Register (0x1100, 4352) ............................................................ 44
6.3.4. Expansion Slot Information Special Register (0x2000, 8192) .............................................. 45
6.4.
MODBUS Reference ............................................................................................................................... 47
7. Trouble Shooting...................................................................................................................................................... 48
7.1.
How to diagnose by LED indicator ................................................................................................. 48
APPENDIX A ......................................................................................................................................................................... 50
A.1. Product List............................................................................................................................................................. 50
A.2. Glossary .................................................................................................................................................................... 52
