FCU Network Variables

App_status

N/A

RO

Device

Property

5002

99

0

65535 – Initialization,

0 – OK,

1 – Malloc image,

2 – Malloc stack

3 – Malloc static data

4 – Input file not found

5 – Cannot read input file

6 – Bad image magic

7 – Bad image version

8 – Bad image block size

9 – Bad image ref size

10 – Bad image code size

11 – Unknown opcode

12 – Missing native

40 – Invalid args

41 – Cannot initialize application

42 – Cannot open file

43 – Invalid magic

44 – Invalid version

45 – Invalid schema

46 – Unexpected EOF

47 – Invalid kit ID

48 – Invalid type ID

49 – Cannot malloc

50 – Cannot insert

51 – Cannot load link

52 – Invalid application end marker

53 – No platform service

54 – Bad platform service

60 – Invalid comp end marker

61 – Name too long

100 – Null pointer

101 – Stack overflow

102 – Invalid method parameters

253 – Yield

254 – Restart

255 - Hibernate 

Occupancy_Mode

N/A

RW

0

100

0

0 – Unoccupied mode,

1 – Occupied mode,

2 – Standby mode

Setpoint

°C

RW

1

101

210

User setpoint temperature
value

Setpoint_Offset

°C

RW

2

102

0

User setpoint offset temperature value

Fan_Mode

N/A

RW

3

103

0

0 - Off

1 - Speed 1 (Manual)

2 - Speed 2 (Manual)

3 - Speed 3 (Manual)

4 – Auto

FCU_Mode

N/A

RW

4

104

1

0 – OFF

1 – Auto

2 – Heating only

3 – Cooling only

4 – Fan only

Setpoint_Offset_Range

°C

RW

5

105

30

Setpoint offset ± range

Net_Temperature

°C

RW

6

106

210

Temperature network variable,

CV source

Heating_Cooling_Switch_Diff

°C

RW

10

110

10

Differential value switching between cooling/heating mode

Unoccupied_Offset

°C

RW

11

111

20

Offset value in for
Unoccupied mode

Standby_Offset

°C

RW

12

112

50

Offset value in for
Standby mode

Occupancy_Time_Remote_Trigger

min

RW

13

113

60

Forced Occupied mode time value for occupancy button I1 and room panel

Occupancy_Time_Presence_Sensor

min

RW

14

114

10

Forced Occupied mode time value for occupancy presence sensor I2

PWM_Heating_Period

s

RW

15

115

300

PWM time period for heating valve actuator

PWM_Cooling_Period

s

RW

16

116

300

PWM time period for cooling valve actuator

Fan_Scale

°C

RW

17

117

30

Fan Scale parameter for fan control algorithm

Fan_Off_Threshold

%

RW

18

118

5

Fan Off Threshold value

Fan_Speed_1_Threshold

%

RW

19

119

30

Fan Speed 1
Threshold value

Fan_Speed_2_Threshold

%

RW

20

120

60

Fan Speed 2
Threshold value

Fan_Speed_3_Threshold

%

RW

21

121

90

Fan Speed 3
Threshold value

Fan_Off_Delay

s

RW

22

122

5

Fan switch off delay
time value

Fan_Soft_Start_Time

s

RW

23

123

20

Time value for Fan Soft Start function

Kp

N/A

RW

24

124

100

PI regulator parameter
Proportional gain

Ti

min

RW

25

125

10

PI regulator parameter
Integral time

Heating_Binary _Diff

°C

RW

26

126

4

1^st stage heating thermostat differential value

Cooling_Binary_Diff

°C

RW

27

127

4

1^st stage cooling thermostat differential value

Second_Stage_Threshold_Binary

°C

RW

28

128

2

2^nd stage shifting parameter in digital control mode

Second_Stage_Diff Binary

°C

RW

29

129

6

2^nd stage thermostat differential parameter in digital control mode

Second_Stage_Threshold_Analog

%

RW

30

130

80

2^nd stage shifting parameter in analog control mode

Second_Stage_Diff_Analog

%

RW

31

131

5

2^nd stage thermostat differential parameter in analog control mode

Supply_Temperature_Low_Limit

°C

RW

32

132

100

Supply air temperature limit values used in Supply air temperature limitation function

Supply_Temperature_High_Limit

°C

RW

33

133

400

Supply_Limits_Time

s

RW

34

134

30

Time value used in supply air temperature limitation function

Window_Status_Delay

s

RW

35

135

60

Time value for open window function

Return_To_Space_Time

s

RW

36

136

30

Time value for return temperature sensor control function

FCU_Test_Mode

N/A

RW

37

137

0

0 - Auto operation

1 - Heating test

2 - Cooling test

Fan_Soft_Start_Value

%

RW

38

138

75

Analog control fan starting value in range from 0% - 100%

Valves_Dead_Band

°C

RW

39

139

0

Valves temperature dead band parameter

Return_Temperature_Offset

°C

RW

40

140

0

Return temperature sensor correction parameter

Supply_Temperature_Offset

°C

RW

41

141

0

Supply temperature sensor correction parameter

Space_Temperature_Offset

°C

RW

42

142

0

Space temperature sensor correction parameter

S1_Sensor_Type

N/A

RW

43

143

1

0 – Voltage measurement

1 - sensor type 10K3A1 NTC

2 – sensor type 10K4A1 NTC

3 – sensor type 10K NTC

4 – sensor type 20K6A1 NTC

5 – sensor type 2,2K3A1 NTC

6 – sensor type 3K3A1 NTC

7 – sensor type 30K6A1 NTC

8 – sensor type SIE1 NTC

9 – sensor type TAC1 NTC

10 – sensor type SAT1 NTC

S2_Sensor_Type

N/A

RW

44

144

1

S3_Sensor_Type

N/A

RW

45

145

1

Heating_Valve_Manual_Value

%

RW

46

146

0

Heating valve manual value, to active manual override please active Heating_Valve_Manual_Enable

Cooling_Valve_Manual_Value

%

RW

47

147

0

Cooling valve manual value, to active manual override please active Cooling_Valve_Manual_Enable

Fan_Valve_Manual_Value

%

RW

48

148

0

Fan valve manual value, to active manual override please active Fan_Valve_Manual_Enable

LCD_Panel_Temperature_Offset

°C

RW

50

150

0

Room panel temperature sensor correction parameter

LCD_Setpoint_Step

°C

RW

51

151

50

Room panel setpoint step

LCD_Setpoint_Low_Limit

°C

RW

52

152

180

Room panel setpoint low limit

LCD Setpoint High Limit

°C

RW

53

153

240

Room panel setpoint high limit

Remote_Slave1_Device_ID

N/A

RW

54

154

0

BACnet slave device ID number

Note: In Modbus protocol this is 32nd bits register

Remote_Slave2_Device_ID

N/A

RW

56

156

0

Remote_Slave3_Device_ID

N/A

RW

58

158

0

Remote_Slave4_Device_ID

N/A

RW

60

160

0

Remote_Slave5_Device_ID

N/A

RW

62

162

0

Slaves_Ping_Frequency

min

RW

64

164

15

Salves ping frequency value

Effective Setpoint

°C

RO

100

200

N/A

Effective setpoint

Value

Occupancy Status

N/A

RO

101

201

0

0 – Unoccupied mode,

1 – Occupied mode,

2 – Standby mode

3 – Forced Occupied mode.

Fan Status

N/A

RO

102

202

0

0 - Off

1 - Speed 1 (manual)

2 - Speed 2 (manual)

3 - Speed 3 (manual)

4 - Speed 1 (auto)

5 - Speed 2 (auto)

6 - Speed 3 (auto)

Fan Type

N/A

RO

103

203

0

Fan type: 0 - Analog,

1 – Speed 1,

2 – Speed 2,

3 – Speed 3.

Cv

°C

RO

104

204

N/A

Temperature control value

Dip_Switch_Configuration

N/A

RO

105

205

N/A

Current CFG DIP switch bits status

App_version

N/A

RO

106

206

2.0

Application version parameter

Heating_Valve

%

RO

110

210

N/A

Heating analog output or triac PWM value

Coolling_Valve

%

RO

111

211

N/A

Cooling analog output or triac PWM value

Fan Value

%

RO

112

212

N/A

Analog type: range 0-100%

Binary type: 0 - stop,

1 – Speed 1,

2 – Speed 2,

3 – Speed 3.

S1_Return_Temperature

°C

RO

113

213

N/A

Special input, S1
Temperature Value

S2_Supply_Temperature

°C

RO

114

214

N/A

Special input, S2
Temperature Value

S3_Space_Temperature

°C

RO

115

215

N/A

Special input, S3
Temperature Value

LCD Panel Temperature

°C

RO

120

220

N/A

Room panel iSMA-B-LP/Touch Point
Temperature value

LCD Panel Humidity

%

RO

121

221

N/A

Room panel iSMA-B-LP/Touch Point
Humidity value

LCD Panel CO2

ppm

RO

122

222

N/A

Room panel iSMA-B-LP/Touch Point
CO₂ value

Offset In Occupied Only

RW

0

1200

False

Enable/Disable setpoint offset parameter calculation in unoccupied and standby mode

Fan Heating Occupied Active

RW

1

1201

True

Enable/Disable fun running at low speed after no fan demand in heating occupied mode

Fan Cooling Occupied Active

RW

2

1202

False

Enable/Disable fun running at low speed after no fan demand in cooling occupied mode

Return_To_Space_Enable

RW

3

1203

False

HTG Relay Enable

RW

4

1204

True

True – enable, false – disable O4 relay working

CLG Relay Enable

RW

5

1205

True

True – enable, false – disable O5 relay working

I1_Remote_Occ_Trigger_Invert

RW

6

1206

False

False – normal, true – invert

I2_Presence_Sensor_Invert

RW

7

1207

False

I3_Window_Contact_Invert

RW

8

1208

True

Local_Remote_Auto_Binding

RW

9

1209

False

False – slave ID from auto binding
True – slave ID from network variable

Heating_Valve_Manual_Enable

RW

10

1210

False

False – auto, true – manual

Cooling_Valve_Manual_Enable

RW

11

1211

False

HTG_Relay_Manual_Enable

RW

12

1212

False

CLG_Relay_Manual_Enable

RW

13

1213

False

Fan_Output_Manual_Enable

RW

14

1214

False

LCD Submenu Icons Hidden

RW

15

1215

True

Show/Hide LCD panel submenu icons

LCD Temperature Active

RW

16

1216

True

Enable/Disable room panel current temperature display

LCD Setpoint Active

RW

17

1217

True

Enable/Disable room panel setpoint temperature display

LCD Setpoint Editable

RW

18

1218

True

Enable/Disable room panel setpoint edit

LCD Setpoint Fast Edit Mode

RW

19

1219

False

Enable/Disable display fast setpoint edit in room panel display

LCD Fan Visable

RW

20

1220

True

Enable/Disable display fan icon on room panel display

LCD Fan Editable

RW

21

1221

True

Enable/Disable fan parameters edit on room panel display

LCD Fan Fast Edit Mode

RW

22

1222

False

Enable/Disable display fast fan speed edit in room panel display

LCD Occupancy Visable

RW

23

1223

True

Enable/Disable fan parameters edit on room panel display

LCD Occupancy Editable

RW

24

1224

True

Enable/Disable Occupancy mode change on room panel display

LCD Occupancy Fast Edit Mode

RW

25

1225

False

Enable/Disable run LCD Occupancy Fast Edit Mode on room panel display

LCD Humidity Active

RW

26

1226

True

Enable/Disable room panel humidity value display

LCD CO2 Active

RW

27

1227

True

Enable/Disable room panel CO₂ value display

HTG_Relay_Manual_State

RW

28

1228

False

HTG Relay state in manual override

CLG_Relay_Manual_State

RW

29

1229

False

CLG Relay state in manual override

Occupied Forced

RO

64

1264

N/A

Forced Occupied mode status

Heating_Second_Stage

RO

80

1280

N/A

Heating in second stage current status

Cooling_Second_Stage

RO

81

1281

N/A

Heating in second stage current status

I1_Remote_Occuapancy_Trigger

RO

82

1282

N/A

Digital input current status

I2_Presence_Sensor_Card_Holder

RO

83

1283

N/A

I3_Window_Conntact

RO

84

1284

N/A

I4_Occupancy_LED

RO

85

1285

N/A

Slave1_Active

RO

96

1296

N/A

Slave device connection status

Slave2_Active

RO

97

1297

N/A

Slave3_Active

RO

98

1298

N/A

Slave4_Active

RO

99

1299

N/A

Slave5_Active

RO

100

1300

N/A

Slave1_Window_Status

RO

101

1301

N/A

Window status I3 input read from slave device

Slave2_Window_Status

RO

102

1302

N/A

Slave3_Window_Status

RO

103

1303

N/A

Slave4_Window_Status

RO

104

1304

N/A

Slave5_Window_Status

RO

105

1305

N/A