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Digital interface complies with the requirements EIA/TIA-422-B and recommendations RTU V.11 and provides for networking and transferring of all measured parameters. The digital interface specifications are presented in Table 1.6.
Table 1.6 – Digital interface specifications
| Digital interface | |
| Standard | EIA RS-485 |
| Data transfer protocol | Modbus RTU |
| Data transfer BAUD rate | 1200, 2400, 4800, and 9600 |
| Maximum distance | 300 m |
| Data format | 8 data bits, 1 start bit, no parity bit, 1 stop bits (default). |
Data format can be edited in the menus 30, 31.
The following measured parameters can be transmitted through the digital interface: mass (volume) flow rate, mass (volume), density and temperature of the medium.
Digital interface may also be used to calibrate and to configure the coriolis mass flow controller.
Coriolis mass flowmeter supports two versions of the Modbus register map:
Register map and description for «TFM» version 2.хх are presented in the Appendix , for «ProLink» version 3.хх – in the Appendix .
Register map version can be selected by ModBus RTU or changing the value of the corresponding Modbus register (see Appendix ) using third party serial port emulators.
