Lauda Integral T 4600 - Page 78

Integral T process thermostats
78 Starting up YAWE 0026 / 21/01/2019
An RS 485 bus always requires bus termination in the form of a termination network which
ensures a defined rest status in the high-resistance phases of bus operation. The bus termination
is as follows:
This termination network is usually incorporated on the PC plug-in card (RS 485).
Protocol:

 The interface operates with 1 stop bit, no parity bit and 8 data bits.
 Transfer rate either 2400, 4800, 9600 (Factory setting) or 19200 baud as
selected.
 The RS 485 commands are always preceded by the device address. There is
provision for 127 addresses. The address must always have 3 digits.
(A000_...to A127_...).
 The command from the computer must be terminated with CR.
 The response of the thermostat is always terminated with CR.
CR = Carriage Return (Hex: 0D).
Example:
Transfer of setpoint 30.5 °C to the thermostat with address 15.
Computer
Thermostat
„A015_OUT_SP_00_30.5“CR


„A015_OK“CR