Description
The Modbus RTU driver allows the FieldServer to transfer data to and from devices over either RS-232 or RS-485 using Modbus RTU protocol. The FieldServer is capable of being used as a port expander.
The FieldServer can emulate either a Server or Client. The FieldServer is capable of supporting devices that use two Modbus Registers to transfer IEEE floating point format.
| Fieldserver Mode |
Nodes |
Comments |
| Client |
1 |
Only 1 client node allowed on Multidrop systems |
| Server |
255 |
Actual electrical loading may reduce number of usable server nodes |
Formal Driver Type
Compatibility Matrix
| FieldServer Model |
Compatible with this driver |
| FS-x2010 |
Yes |
| FS-x2011 |
Yes |
| FS-x40 |
Yes |
| FS-x30 |
Yes |
Connection Information
| Connection type: |
RS-232 or RS-485 (Two wire, Half-Duplex) |
| Baud Rates: |
110-11520 |
| Data Bits: |
8 |
| Stop Bits: |
1 |
| Parity: |
None |
| Multidrop Capability: |
Yes |
Devices tested
| Device |
Tested (FACTORY, SITE) |
| Modbus RTU Devices |
Factory |
| Liebert Sitelink |
Customer |
| Square D Activar 58 |
Customer |
| Triatek |
Customer |
| WonderWare InTouch |
Factory |
| Fix Intellution |
Factory |
| GE Cimplicity |
Customer |
| Modscan |
Factory |
| GE PLEPM |
Factory |
| ABB Extrel |
Customer |
| Andover Controls |
Customer |
| Eurotherm Chessel |
Customer |
| Sierra Monitor Sentry |
Factory |
| Magnatek |
Customer |
| Others |
Please contact Factory |
Connection configurations
Communications functions - Supported functions at a glance:
Function Codes Supported:
| Function Codes |
Description |
| 01 |
Read Discrete Output Status (0xxxx) |
| 02 |
Read Discrete Input Status (1xxxx) |
| 03 |
Read Output Registers (4xxxx) |
| 04 |
Read Input Registers (3xxxx) |
| 05 |
Force Single Coil (0xxxx) |
| 06 |
Preset Single Register (4xxxx) |
| 15 |
Force Multiple Coils (0xxxx) |
| 16 |
Preset Multiple Registers (4xxxx) |
