Proline Edition X cooling thermostats
YACE0100 / October 4, 2018
93
8.3.4 Protocol RS-485
The interface operates with one 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 three 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
Setpoint transfer with up to 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
TiH outflow temperature limit, high limit.
OUT_SP_05_XXX
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).
OUT_PAR_07_XX.X
Setting of control parameter TdE.
OUT_PAR_09_XXX.X
Setting of the correction limitation.
OUT_PAR_10_XX.X
Setting of control parameter XpF.
OUT_PAR_14_XXX.X
Setting of the setpoint offset.
OUT_PAR_15_XXX
Setting of control parameter PropE
OUT_MODE_00_X
Keyboard Master: 0 = free / 1 = locked
(corresponds to “KEY”).
OUT_MODE_01_X
Control: 0 = internal / 1 = external Pt100 / 2 = external Analogue / 3 =
external Serial.
OUT_MODE_03_X
Keyboard Command: 0 = free / 1 = locked.
OUT_MODE_04_X
Setpoint offset source: 0 = normal / 1 = external Pt / 2 = external analogue
/ 3 = external serial.
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