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 19
08 Memory Parity Error The server (or slave) attempted to read record file, but detected
a parity error in the memory. The client (or master) can retry
the request, but service may be required on the server (or slave)
device.
0A Gateway Path
Unavailable
Specialized use in conjunction with gateways, indicates that the
gateway was unable to allocate an internal communication path
from the input port to the output port for processing the
request.
- RN-9289 response exception code 01, 02, 03, 04 and 06.
3.2. MODBUS Special Register Map
The special register map can be accessed by function code 3, 4, 6 and 16. Also the special register map must be
accessed by read/write of every each address (one address).
PRELIMINARY