Yokogawa 212 Heat Calculator - Manual (Page 12)

RS485 Option
Data Transmitted: Volume and energy totals, peak power,
temperatures.
Baud rate: 300 - 9600 baud.
Parity: Odd, even or none.
Stop bits: One or two stop bits.
Bus Address: Programmable for multiple instruments on the
same bus.
Protocol: Modbus RTU.
Meter-Bus
Type: Conforms to CEN/TC176 Meter-bus standard.
Protocol: IEC 870-5.
10 Specification