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CONSTblT

Constant backlight setting

COS: N/A

Permissions: Read/Write

Query
Command

Syntax:

SN[#] CONSTBLT?<CR>

Description: Requests the constant backlight setting .

Assignment
Command

Syntax:

SN[#] CONSTBLT=[value]<CR>

Description: Sets the constant backlight setting

[value]

Example:

SN1 CONSTBLT=OFF<CR>

Response

Syntax:

SN[#] CONSTBLT=[value]<CR>

Example:

SN1 CONSTBLT=OFF<CR>

Node address 1 responds with a constant backlight setting of OFF .

Parameters

Range

value:

constant backlight setting

[OFF, ON]

OFF:

disabled

ON:

enabled

blTON

Backlight activation

COS: N/A

Permissions: Write only

Assignment
Command

Syntax:

SN[#] BLTON<CR>

Description: Turns on the backlight .
Example:

SN1 BLTON<CR>

Response

Syntax:

SN[#] BLTON<CR>

Example:

SN1 BLTON<CR>

Node address 1 responds with backlight on .

When this command is issued by the Host, the node activates the backlight for 10 seconds . NOTE: The assignment command has no parameters .

Содержание 8800

Страница 1: ...eport Control Commands 18 Setup Commands 20 Alarm Commands 25 Lockout Commands 27 Sensor Commands 31 Temperature Control Commands 36 Humidity Control Commands 44 Program and Schedule Commands 46 Status Commands 52 Messaging Commands 55 Introduction This document contains information needed to write interface code for the Aprilaire Model 8800 Communicating Thermostat For wiring and thermostat setup...

Страница 2: ...lots are based on the setting for number of thermostats on the network The default setting is 64 Each slot is divided into four sub slots Legacy timing is based on 16 bit timer running at 1MHz e g 65536 1 1MHz 65 536 ms Baud Rate Slot Width Sub slot Width 9 600 262 144 ms 65 536 ms 19 200 131 072 ms 32 768 ms The four sub slots of a slot are Sub slot Name Description 1 Solicited Response Sub slot ...

Страница 3: ...ansmissions are not governed by slot timing since the Host controller is the only device on its respective transmit line The Host controller does however need to meet specific timing to prevent missed commands and collisions Command timing is determined by the type of response as follows When a response to an Explicit Address Command is desired slot width sub slot width time must elapse after issu...

Страница 4: ...ce the communication timing and control variables are reset upon receipt of the CR from the Host controller each node must wait for its respective slot before transmitting its response The slot time from the reset caused by the CR synchronization can be calculated using the following equation t n 1 x slot width Where n is the node address and slot width is the duration of a slot based on the baud ...

Страница 5: ...dress may be omitted entirely Command Command name See Command Table for list of commands Query Indicates a query type command Assignment Indicates an assignment type command Always immediately followed by value value Assignment value Value for assignment type command CR Command terminator All commands are terminated with the carriage return character NOTE Following the initial SN syntax the space...

Страница 6: ...IME Minimum heat equipment off time 11 COFFTIME Minimum compressor off time 12 ACHGTIME Minimum auto changeover time 12 DBAND Auto mode deadband configuration 12 RECOV Progressive recovery configuration 13 HIBP High balance point configuration 13 LOBP Low balance point configuration 14 OFFSET Offset applied to control and display temperature 14 Command Description Page Communication Control NETAD ...

Страница 7: ...umidity sensor value 35 RTS Report thermostat remote temperature sensor value 35 Command Description Page Temperature Control MODE M Thermostat or humidistat control mode setting 36 FAN F Thermostat fan mode setting 37 SH Controlling heat setpoint value 38 SH Increments the controlling heat setpoint value 39 SH Decrements the controlling heat setpoint value 39 SC Controlling cool setpoint value 40...

Страница 8: ...e 0 1 0 heat pump 1 heat cool The equipment type is selected using the HP HC option switch The master slave setting is always set to slave and cannot be modified EQUIP Additional thermostat equipment configuration settings COS N A Permissions Read only Query Command Syntax SN EQUIP CR Description Requests the thermostat control setup auxiliary stages and extended fan settings Response Syntax SN EQ...

Страница 9: ...ad Write Query Command Syntax SN DIF n CR Description Requests the stage n differential Example SN DIF1 CR Assignment Command Syntax SN DIF n value CR Description Sets the stage n differential to value Example SN1 DIF2 3 CR Response Syntax SN DIF n value CR Example SN1 DIF1 1 CR Node address 1 responds with stage 1 differential setting of 1 Parameters Range n equipment stage 1 4 1 1st stage 2 2nd ...

Страница 10: ...fan in cooling code 0 1 0 disabled 1 enabled This command is ignored if the controller type is set to humidistat INTEGRAL PI control integral factor period COS N A Permissions Read Write Query Command Syntax SN INTEGRAL CR Description Requests the integral factor period setting Assignment Command Syntax SN INTEGRAL value CR Description Sets the integral factor period to value minutes Examples SN1 ...

Страница 11: ...n time COS N A Permissions Read only Query Command Syntax SN EQONTIME CR Description Requests minimum equipment on time setting Response Syntax SN EQONTIME value CR Example SN1 EQONTIME 2 CR Node address 1 responds with a minimum equipment on time of 2 minutes Parameters Range value minimum equipment on time in minutes 1 5 Default 2 HOFFTIME Minimum heat equipment off time COS N A Permissions Read...

Страница 12: ...HGTIME value CR Example SN1 ACHGTIME 4 CR Node address 1 responds with a minimum compressor off time of 4 minutes Parameters Range value minimum auto mode changeover time in minutes 1 5 Default 4 DBAND Auto mode deadband configuration COS N A Permissions Read Write Query Command Syntax SN DBAND CR Description Requests the auto mode deadband setting Assignment Command Syntax SN DBAND value CR Descr...

Страница 13: ... to value in degrees scale Examples SN1 HIBP 65 CR SN1 HIBP 4 CR SN1 HIBP OFF CR Response Syntax SN HIBP value scale CR Example SN1 HIBP 65F CR Node address 1 responds with a high balance point configuration setting of 65 F Parameters Range value high balance point cut off temperature in 5 F or 3 C step OFF Fahrenheit 40 85 Celsius 3 30 Default 65F or 18C scale temperature scale null F C The high ...

Страница 14: ...balance points the high balance point is automatically increased to remove the deadband violation This command is only accepted if the thermostat is configured as heat pump and if the outdoor temperature is available Integer values must be within the range specified for the current temperature scale NOTE If a zero 0 is sent as the value for an assignment command and the temperature scale is Fahren...

Страница 15: ...Read only Query Command Syntax SN CR SN0 CR Description Global request to all connected thermostats for the node address Response Syntax SN CR Example SN1 CR Node address 1 responds NETST Number of connected thermostats on the network COS N A Permissions Read Write Query Command Syntax SN NETST CR Description Requests the number of thermostats setting Assignment Command Syntax SN NETST value CR De...

Страница 16: ...h a baud rate of 96 Parameters Range value communication baud rate code 96 192 96 9 600 bps 192 19 200 bps ID Thermostat model and software revision COS N A Permissions Read only Query Command Syntax SN ID CR Description Requests the node model and software revision Response Syntax SN MODEL model REV revision RPC year CR Example SN1 MODEL 8800 REV 1 0 RPC 2011 CR Parameters Range model node model ...

Страница 17: ...e command response setting Assignment Command Syntax SN CR value CR Description Sets the command response setting to value Example SN1 CR NORMAL CR Response Syntax SN CR value CR Example SN1 CR NORMAL CR Node address 1 responds with a command response setting of NORMAL Parameters Range value command response setting NORMAL N QUIET Q SILENT S NORMAL thermostat always responds to all command types s...

Страница 18: ...e configurations Each set contains the command response control setting and the report setting for each COS command Changes to the command response control setting or any COS report setting are applied to the active configuration pattern This feature can be used to facilitate the use of a standard configuration for normal operation and second configuration for special functions CP 2 is useful for ...

Страница 19: ...e variables and COS messages All COS messages use the short form of the command for the unsolicited COS message Item Variable Description COS Message s C1 HVAC Relays Relay output status change H C2 Temperature or Humidity Controlling temperature or humidity change 1 1 RH T HUM C3 Outdoor Temperature or Remote Humidity Outdoor temperature or remote humidity change 1 1 RH OT OH C4 Contact Closures ...

Страница 20: ...rature scale Default values are in bold TIME Thermostat time COS C13 Permissions Read Write Query Command Syntax SN TIME CR Description Requests the current time held by the thermostat Assignment Command Syntax SN TIME hh mm CR Description Sets the time to hh hours and mm minutes Example SN1 TIME 1200 CR Response or COS Message Syntax SN TIME value CR Example SN1 TIME 1532 CR Node address 1 respon...

Страница 21: ...the date is changed at the thermostat a C13 COS unsolicited message is issued if C13 is ON PROGFMT Thermostat program format COS C13 Permissions Read Write Query Command Syntax SN PROGFMT CR Description Requests the program format setting Assignment Command Syntax SN PROGFMT value CR Description Sets the program format setting to value Example SN1 PROGFMT 2 CR Response or COS Message Syntax SN PRO...

Страница 22: ...y This command is ignored if the controller type is set to humidistat EVTSDAY Thermostat program events per day COS C13 Permissions Read Write Query Command Syntax SN EVTSDAY CR Description Requests the program events per day setting Assignment Command Syntax SN EVTSDAY value CR Description Sets the program events per day setting to value events per day Example SN1 EVTSDAY 4 CR Response or COS Mes...

Страница 23: ...ing code OFF MARCH APRIL OFF daylight savings time is disabled MARCH daylight savings time starts in March and ends in November APRIL daylight savings time starts in April and ends in October BLTLVL Backlight intensity level COS N A Permissions Read Write Query Command Syntax SN BLTLVL CR Description Requests the backlight intensity level setting Assignment Command Syntax SN BLTLVL value CR Descri...

Страница 24: ...STBLT OFF CR Node address 1 responds with a constant backlight setting of OFF Parameters Range value constant backlight setting OFF ON OFF disabled ON enabled BLTON Backlight activation COS N A Permissions Write only Assignment Command Syntax SN BLTON CR Description Turns on the backlight Example SN1 BLTON CR Response Syntax SN BLTON CR Example SN1 BLTON CR Node address 1 responds with backlight o...

Страница 25: ...alarm period setting Assignment Command Syntax SN alarm ALMP value CR Description Sets the alarm alarm period to value Examples SN1 FLTALMP OFF CR SN1 SYSALMP 12 CR Response Syntax SN alarm ALMP value CR Example SN1 FLTALMP OFF CR Node address 1 responds with an air filter alarm period setting of OFF Parameters Range alarm alarm command code FLT WP DEH SYS value alarm period setting in months FLT ...

Страница 26: ...and is received with the value parameter set to OFF and the specified alarm is active the respective alarm is cleared and reset if the alarm period is not set to OFF When an assignment command is received with the value parameter set to ON and the specified alarm is not active and the specified alarm period is set to OFF the respective alarm is activated and displayed on the screen If the alarm st...

Страница 27: ...t settings provide varying degrees of setpoint lockout Time limited lockouts must be enabled in conjunction with the temporary change period LKTIME command MODELK User system mode lockout configuration COS N A Permissions Read Write Query Command Syntax SN MODELK CR Description Requests the mode lockout configuration setting Assignment Command Syntax SN MODELK value CR Description Sets the mode lo...

Страница 28: ...ockout configuration setting Assignment Command Syntax SN UPDNLK value CR Description Sets the mode setpoint configuration setting to value Example SN1 UPDNLK 0 CR Response Syntax SN UPDNLK value CR Example SN1 UPDNLK 0 CR Node address 1 responds with a setpoint lockout setting of disabled Parameters Range value setpoint lockout setting code 0 4 0 lockout disabled 1 time limited lockout changes wi...

Страница 29: ...t command is received the active temporary change period is set to value There is only one temporary change period It can be started by a change to any of the time limited lockout enabled variables The temporary change period does not restart if another time limited lockout enabled variable changes Integer values must be within the range specified The command has no effect unless FANLK or UPDNLK i...

Страница 30: ...sponse Syntax SN PIN value CR Example SN1 PIN 1234 CR Node address 1 responds with a security pin code of 1234 Parameters Range value 4 digit pin OFF 0000 9999 Default OFF If an assignment command is received with a value other than OFF security is automatically enabled If the value is OFF security is disabled and the security pin is not required for security restricted features The security pin c...

Страница 31: ...lt in temperature sensor If the value of the temperature changes by 1 or more a C2 COS unsolicited message is issued if C2 is ON HUM Humidistat humidity control value COS C2 Permissions Read only Query Command Syntax SN HUM CR Description Requests the humidity control value setting Response or COS Message Syntax SN HUM value CR Example SN1 HUM 35 CR Node address 1 responds with a humidity of 35 RH...

Страница 32: ... local address 1 with a control temperature sensor and a remote humidity sensor and the second at local address 3 with a control temperature sensor and a remote temperature sensor Parameters Range S1 support module sensor 1 type code CT RT XX S2 support module sensor 2 type code CT RT CH RH XX CT control temperature sensor for controlling humidity RT remote temperature sensor for display only CH c...

Страница 33: ...Node address 1 responds with an RH of 50 on sensor 2 of module 3 Parameters Range x support module address 1 4 y support module sensor number 1 2 value sensor value temperature sensor Fahrenheit 40 130 temperature sensor Celsius 40 55 humidity sensor 0 99 no sensor or module scale sensor scale based on sensor type and temperature scale null F C F Fahrenheit C Celsius percent RH Each support module...

Страница 34: ...ia support module 1 sensor 1 it responds with SN n OT scale CR If an assignment command is received and the node does have an outdoor temperature sensor the command is ignored and no response sent The assignment command is used to allow one node to share the outdoor temperature sensor value This is accomplished through the Host controller by determining which node has the outdoor temperature then ...

Страница 35: ...tax SN BIHUM CR Description Requests the built in humidity sensor reading Response Syntax SN BIHUM value CR Example SN1 BIHUM 30 CR Node address 1 responds with a built in humidity of 30 RH Parameters Range value built in humidity sensor value 0 99 If the humidity sensor has an error the response is SN n BIHUM CR RTS Node remote temperature sensor COS N A Permissions Read only Query Command Syntax...

Страница 36: ...t Example SN1 M COOL CR Node address 1 responds with a control mode of Cool Parameters Range value control mode OFF O HEAT H COOL C EMHT E AUTO A HUMID DEHUM OFF O Off mode Thermostat or Humidistat HEAT H Heat mode Thermostat COOL C Cool mode Thermostat EMHT E Emergency heat mode heat pump only Thermostat AUTO A Auto mode Thermostat or Humidistat HUMID Humidification Humidistat DEHUM Dehumidificat...

Страница 37: ...COS Message Syntax SN F value CR Description The thermostat sends the fan mode The value parameter is always in the verbose format Example SN1 F ON CR Node address 1 responds with a thermostat fan mode of ON Parameters Range value control mode codes AUTO A ON CIRC AUTO A fan auto mode ON fan on mode CIRC fan circulate mode The fan mode can be changed through the Home Screens of the thermostat If t...

Страница 38: ...hat causes a deadband violation the cool setpoint is automatically increased to fulfill the deadband requirement If the deadband requirement cannot be fulfilled by increasing the cool setpoint the command is ignored and no response sent If an assignment command is received while the thermostat is running the program schedule the thermostat automatically initiates a temporary hold with an end time ...

Страница 39: ...ent and must abide by the deadband If an assignment command is received with a heat setpoint increment value that causes a deadband violation the cool setpoint is automatically increased to fulfill the deadband requirement If the deadband requirement cannot be fulfilled by increasing the cool setpoint the command is ignored and no response sent If an assignment command is received while the thermo...

Страница 40: ...es a deadband violation the heat setpoint is automatically decreased to fulfill the deadband requirement If the deadband requirement cannot be fulfilled by decreasing the heat setpoint the command is ignored and no response sent If an assignment command is received while the thermostat is running the program schedule the thermostat automatically initiates a temporary hold with an end time of the s...

Страница 41: ... must abide by the deadband If an assignment command is received with a cool setpoint decrement value that causes a deadband violation the heat setpoint is automatically decreased to fulfill the deadband requirement If the deadband requirement cannot be fulfilled by decreasing the heat setpoint the command is ignored and no response sent If an assignment command is received while the thermostat is...

Страница 42: ...ode is determined by the control In addition when the system mode is set to AUTO the heat and cool setpoints or humidification and dehumidification setpoints are interdependent and must abide by the deadband If an assignment command is received with a setpoint value that causes a deadband violation the opposite setpoint is automatically increased or decreased to fulfill the deadband requirement If...

Страница 43: ...ined by the control In addition when the control system mode is set to AUTO the heat and cool setpoints or humidification and dehumidification setpoints are interdependent and must abide by the deadband If an assignment command is received with a setpoint increment or decrement value that causes a deadband violation the opposite setpoint is automatically increased or decreased to fulfill the deadb...

Страница 44: ...creased or decreased to fulfill the deadband requirement If the deadband requirement cannot be fulfilled by increasing or decreasing the opposite setpoint the command is ignored and no response sent Integer values must be within the range specified The humidification setpoint can be changed through the Home Screens for humidistat control If the humidification setpoint is changed at the thermostat ...

Страница 45: ...for humidistat control If the dehumidification setpoint is changed at the thermostat a C5 COS unsolicited message is issued if C5 is ON SDEH SDEH Increment or decrement the controlling humidistat dehumidification setpoint COS N A Permissions Write only Assignment Command Syntax SN SDEH value CR Syntax SN SDEH value CR Description Increments or decrements the controlling dehumidification setpoint t...

Страница 46: ...hh mm with a heat setpoint of HT a cool setpoint of CL and fan mode of fan If the thermostat is configured with a Control Setup of Heat Only or Cool Only only the respective setpoint is used Example SN1 PROGD1E1 0600 69 78 AUTO CR Response or COS Message Syntax SN PROGD x E y hh mm HT scale CL scale fan CR SN PROGD x E y hh mm HT scale fan CR SN PROGD x E y hh mm CL scale fan CR Example SN1 PROGD1...

Страница 47: ...the week code x is configured with the parameters of the command assuming correct syntax etc If a query command is received with a day of the week code x parameter of 7 or 9 the event configuration of Monday is sent if the parameter is 8 the event configuration of Saturday is sent If the thermostat is configured for 2 events per day commands received with the event y parameter greater than 1 is ig...

Страница 48: ...ng can be copied from day one day to another day or set of days using this command If an assignment command is received with a day of the week code copy_to parameter of 7 9 each day corresponding to the day of the week code copy_to is configured with the events of the x day assuming correct syntax etc This command is ignored if the controller type is set to humidistat or if the thermostat is confi...

Страница 49: ...is received with the value parameter set to ON and another hold type is currently active the currently active hold is replaced by the permanent hold An assignment command with value parameter set to OFF cancels an active permanent hold The current hold status can be read using the HOLDSTAT command A permanent hold can also be cancelled using the HOLDSTAT command This command is ignored if the cont...

Страница 50: ...d to end on January 10 2011 at 7 00PM with a heat setpoint of 65 F and fan mode of AUTO Parameters Range mm end date month 01 12 dd end date day 01 31 yy end date year 00 99 hh end time hours in 24 hour format 00 23 mm end time minutes 00 59 HT hold heat setpoint Fahrenheit 40 90 Celsius 4 32 CL hold cool setpoint Fahrenheit 42 99 Celsius 6 37 fan hold programmed fan mode AUTO A ON CIRC AUTO A fan...

Страница 51: ...he respective setpoint is used The syntax with both setpoints is only used when the system mode is AUTO Example SN1 TEMPHOLD 010111 1700 70F CR Node address 1 responds with a temporary hold configured to end on January 1 2011 at 5 00PM with a heat setpoint of 70 F Parameters Range mm end date month 01 12 dd end date day 01 31 yy end date year 00 99 hh end time hours in 24 hour format 00 23 mm end ...

Страница 52: ...ges a C1 COS unsolicited message is issued if C1 is ON RECOVSTAT Progressive recovery status COS C15 Permissions Read only Query Command Syntax SN RECOVSTAT CR Description Requests the current state of progressive recovery Response or COS Message Syntax SN RECOVSTAT value CR Example SN1 RECOVSTAT OFF CR Node address 1 responds with a progressive recovery status of OFF Parameters Range value progre...

Страница 53: ... the controller type is set to humidistat Holds can be changed initiated or cancelled through the thermostat Home Screens If the hold status is changed at the thermostat a C17 COS unsolicited message is issued if C17 is ON HOLD Network override status COS C6 Permissions Read Write Query Command Syntax SN HOLD CR Description Requests the network override status Assignment Command Syntax SN HOLD val...

Страница 54: ...ror status COS C19 Permissions Read only Query Command Syntax SN ERROR CR Description Requests the current error state Response or COS Message Syntax SN ERROR t rt ot h com ee CR Example SN1 ERROR 000000 CR Node address 1 responds with an error status indicating no errors Parameters Range t built in temperature sensor error status code 0 2 rt remote temperature sensor error status code 0 2 ot remo...

Страница 55: ...ercase only If an assignment command is received with a null string the default message is displayed The default messages are Message Default String 1 NULL 2 NULL 3 NULL 4 NULL TMPMES Temporary message COS N A Permissions Read Write Query Command Syntax SN TMPMES CR Description Requests the temporary message string Assignment Command Syntax SN TMPMES string CR Description Sets the message string f...

Страница 56: ...P O Box 1467 Madison WI 53701 1467 Phone 800 334 6011 Fax 608 257 4357 www aprilairepartners com 10009414 6 11 B2205491A Printed in U S A 2011 Aprilaire A division of Research Products Corporation ...

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