Thermokon LCF02 5DO RS485 Modbus - HOLDING REGISTERS - PI CONTROLLER SETTINGS; Fan Coil Type and Fan Control; Control Loop Parameters (Heating;Cooling); Thresholds and Protection Settings

Issue Date: 06.04.2021 Page 9 / 12
Thermokon Sensortechnik GmbH, Platanenweg 1, 35756 Mittenaar, Deutschland · tel: 02778/6960-0 · fax: -400 · www.thermokon.de · email@thermokon.de
LCF02-5DO_Datasheet_en.docx © 2021
PI controller
Address
Access
Description
Resolution / Unit
Default
277
0x0115
Read-only
Controller mode Comfort :
0b0000 0000=controller off (Frost protection active)
0b0000 0001=controller auto mode (heating&cooling)
0b0000 0010=controller heating mode only
0b0000 0011=controller cooling mode only
0b0000 0100=ventilating (PI loop controls fan stages only,
valves closed)
1
Controller mode ECO:
0b0001 0000=controller off (Frost protection active)
0b0001 0001=controller auto mode (heating&cooling)
0b0001 0010=controller heating mode only
0b0001 0011=controller cooling mode only
0b0001 0100=ventilating (PI loop controls fan stages only,
valves closed)
278
0x0116
Read-write
Fan coil type
0b00000000= 2-pipe:cooling&heating with Change-Over
0b00000001= 4-pipe:cooling&heating
1
279
0x0117
Read-write
Fan stages and operation modes
0b00000000 = none, (fan key is locked the fan symbol will
be faded on the LCD)
0bxxxx0001 = single stage
0bxxxx0010 = 2 stages
0bxxxx0011 = 3 stages
0b0001xxxx = fan works not in heating mode
0b0010xxxx = fan works not in cooling/ventilation mode
(0b0011xxxx = fan works not in heating & cooling mode)
3
280
0x0118
Read-write
Start fan at highest stage for (_) seconds
0…60 = 0…60 seconds
1.0
s
0
281
0x0119
Read-write
Fan OFF-Delay
0= fan never stops
1..255 = Fan stops 1…255 minutes after valves closing
1.0
min
15
282
0x011A
Read-write
PWM Cycle time
0 = for 2-point control
1…255 = PWM cycle time 1…255 minutes
15
283
0x011B
Read-write
Deadband
1...100 = 0,1…10,0 °C/°F
0.1
°C/°F
10
284
0x011C
Read-write
Heating Proportional Band Xp_heat
1...100 -> 0,1…10,0°C
0.1
°C/°F
20
285
0x011D
Read-write
Heating Integration Time Tn_heat
0...255 = 0…255 Minutes
1.0
min
30
286
0x011E
Read-write
Cooling Proportional Band Xp_cool
1…100 -> 0,1…10,0°C/°F
0.1
°C/°F
20
287
0x011F
Read-write
Cooling Integration Time Tn_cool
0…255 = 0…255 Minutes
1.0
min
30
288
0x0120
Read-write
Minimal limit of the control variable heat
0..100
1.0
%
0
289
0x0121
Read-write
Maximal limit of the control variable heat
0..100
1.0
%
100
290
0x0122
Read-write
Minimal limit of the control variable cool
0..100
1.0
%
0
291
0x0123
Read-write
Maximal limit of the control variable cool
0..100
1.0
%
100
292
0x0124
Read-write
Fan stage 1 ON threshold control variable heat
0..100
1.0
%
5
293
0x0125
Read-write
Fan stage 2 ON threshold control variable heat
0..100
1.0
%
35
294
0x0126
Read-write
Fan stage 3 ON threshold control variable heat
0..100
1.0
%
70
295
0x0127
Read-write
Fan stage 1 ON threshold control variable cool
0..100
1.0
%
5
296
0x0128
Read-write
Fan stage 2 ON threshold control variable cool
0..100
1.0
%
35
297
0x0129
Read-write
Fan stage 3 ON threshold control variable cool
0..100
1.0
%
70
298
0x012A
Read-write
Frost protection temperature threshold
50..150 = +5,0..+15,0 °C
400..600 = +40..+60 °F (257 – 0x0101 = 1)
0.1
°C/°F
70 /
450
299
0x012B
Read-write
Change-Over Temperature Threshold for Heating
0..500 = 0..+50,0 °C
300..1200 = +30..+120,0 °F (257 – 0x0101 = 1)
0.1
°C/°F
300 /
860
300
0x012C
Read-write
Change-Over Temperature Threshold for Cooling
0..500 = 0..+50,0 °C
300..1200 = +30..+120,0 °F (257 – 0x0101 = 1)
In case temperature is in between both thresholds the last
state will be maintained
0.1
°C/°F
190 /
660
304
0x0130
Read-write
Valve type selection
0= ON-OFF (ON = Valve Open, OFF = Valve Closed)
1=PWM (0%= 0%PWM .. 100% = 100% PWM)
2= OFF-ON (OFF = Valve Open, ON = Valve Closed)
0