Lauda PROLINE P 5 C, Руководство по эксплуатации

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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 opera-
tion. The bus termination is as follows:
This termination network is usually incorporated on the PC plug-in card (RS 485).
8.3.4 Protocol RS 485


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
8.3.5 Write commands (Data commands to the thermostat)
Command Explanation
OUT_PV_05_XXX.XX External temperature given via interface
OUT_SP_00_XXX.XX Set value transfer with max. 3 places before the decimal point and max. 2
places after it
OUT_SP_01_XXX Pump power level 1 to 8
OUT_SP_02_XXX Operation mode cooling (0 = OFF / 1 = ON / 2 = AUTOMATIC)
OUT_SP_04_XXX.X TiH outflow temperature limit, high limit
OUT_SP_05_XXX.X TiL outflow temperature limit, low limit
OUT_PAR_00_XX.X Setting of control parameter Xp
OUT_PAR_01_XXX Setting of control parameter Tn (5 — 180 s; 181 = Off)
OUT_PAR_02_XXX Setting of control parameter Tv
OUT_PAR_03_XX.X Setting of control parameter Td
OUT_PAR_04_X.XX Setting of control parameter KpE
OUT_PAR_05_XXX Setting of control parameter TnE (5 — 979 s; 980 = Off)
OUT_PAR_06_XXX Setting of control parameter TvE (0 = Off).