Manual
Table Of Contents
- Table of Contents
- 1. ENVIRONMENT SPECIFICATION
- 2. NA-9379 (FNIO MODBUS PROGRAMMABLE I/O)
- 3. MODBUS/RTU INTERFACE (NOT TCP)
- 3.1. Surpported MODBUS Function Codes
- 3.1.1. 1 (0x01) Read Coils
- 3.1.2. 2 (0x02) Read Discrete Inputs
- 3.1.3. 3 (0x03) Read Holding Resgisters
- 3.1.4. 4 (0x04) Read Input Resgisters
- 3.1.5. 5 (0x05) Write Single Coil
- 3.1.6. 6 (0x06) Write Single Register
- 3.1.7. 8 (0x08) Diagnostics
- 3.1.8. 15 (0x0F) Write Multiple Coils
- 3.1.9. 16 (0x10) Write Multiple Resgisters
- 3.1.10. 23 (0x17) Read/Write Multiple Resgisters
- 3.1.11. Error Response
- 3.2. MODBUS Special Register Map
- 3.2.1. Adapter Resgister Mapping
- 3.2.2. Adapter Identification Special Resgister (0x1000, 4096)
- 3.2.3. Adapter Watchdog Time, other Time Special Register (0x1020, 4128)
- 3.2.4. Adapter Information Special Register (0x1100, 4352)
- 3.2.5. Adapter Setting Special Register (0x1600, 5632)
- 3.2.6. Expasion Slot Information Special Resister (0x2000, 8192)
- 3.3. Surpported MODBUS Function Codes
- 3.1. Surpported MODBUS Function Codes

NA-9379
Specification
Revision 1.02
FnBus PIO N/A
Page 7
2.3. NA-9379 LED Indicator
2.3.1. LED Indicator
2.3.2. MOD (Module Status LED)
Status LED is To indicate
Not Powered OFF Not power is supplied to the unit.
Normal, Operational Green The unit is operating in normal condition.
Devicce in Standby Blinking Green The EEPROM parameter is not initialalized yet.
Serial Number is zero value (0x00000000)
IAP Mode Flashing Green IAP Mode : Availble for firmware download using FireFox.
Minor Fault Blinking Red The unit has occurred recoverable fault in self-testing.
- EEPROM checksum fault.
Unrecoverable Fault Red The unit has occurred unrecoverable fault in self-testing.
- Firmware fault
2.3.3. NET (Network Status LED)
Status LED is To indicate
Not Used
2.3.4. RUN (PLC Run/Stop Status LED)
Status LED is To indicate
Not programmed OFF Not power is supplied to the unit or Not programmed
Run Green PLC Run
Stop Blinking
Green
PLC Stop
Diagnostic Blinking Red Diagnostic Mode
PRELIMINARY
LED No. LED Function / Description LED Color
MOD Module Status Green/Red
NET Not Used -
RUN Error Status Green/Red
I/O Expantion Module Status Green/Red
Field
Power
Field Power Enable Green