### BACnet Multi-State Time Clock The information below provides a FULL description of this microblock and all of its properties. What information you see and what you can do with it depends on your license and the application you are in, and in some cases, a controller's driver version.
Microblock family | Control microblocks
Icon and symbol |
What it does | This microblock reads schedules from the WebCTRL® or Field Assistant system and generates values to tell the control program what state the zone is in, and how long the zone will remain in its current state. This microblock can be used to establish a schedule that outputs different values at different times of the day. For example, it can be used to control lighting which has multiple modes such as normal workday, janitorial cleaning, and after-hours modes. The Multi-State Time Clock should be used with the system's Multi-State (not Boolean) schedules. The value appears to other BACnet devices as the Present Value property of a BACnet schedule object. The microblock has two outputs: the mode output, which indicates what mode the zone is currently in; and the time output, which indicates the number of minutes remaining until the mode changes. The value of these outputs depends on the schedule entered for the control program in the WebCTRL® or Field Assistant system. Enter or view schedules on the Schedules page. You cannot set schedules using the microblock's dialog box. The Properties page shows the current occupancy status of the zone and the time when the occupancy is scheduled to change.
Click for details below Properties Alarms Simulation
#### Properties TIPS Alt+click any value in the WebCTRL® or Field Assistant interface to view property details, including its editing privilege and expression (location path) for use on graphics. You can right-click some properties in the EIKON® Property Editor and select Make editable or Make read-only to determine that property's functionality in your system.
Display Name | The microblock label used in the EIKON® application and the WebCTRL® interface. You can use any characters except the " character.
Reference Name RefName | Use the default reference name unless you want a more descriptive name for graphics or network links. Limitations: lower case only limited to 40 characters cannot begin with a number must be unique within a control program
Description | (optional) A BACnet-visible microblock description.
Lock Present Value | Check to output the locked value from the microblock instead of the microblock's calculated value.
Editing Privilege | Preset - Each microblock property has an appropriate privilege or role assigned to it. You can use Global Modify in the WebCTRL® interface to find out what the actual privilege is. CAUTION If you change the Editing Privilege from Preset, the privilege you select will be used for all properties of this microblock, which is not always desirable.
Schedule Category | Select the category of the schedule that will run the controlled equipment.
Unscheduled Value | The value the microblock assumes when no schedule has been downloaded to the program if: The system has no schedules that affect the equipment. A stand alone controller is powered up but no schedule data has been entered.
State Text | You must define the text that will appear on the Properties page when the device is in each state. For Value 1, type the text in the field under BACnet Text. For each additional state, click Add and then type the text. To have a state put the BACnet object in an alarm or fault condition, select the appropriate option for that state under Alarm/Fault.
Show scheduling limits: | The default limits for the Occupancy schedule category. NOTES A schedule download will fail if you exceed these limits when creating schedules. Changing these properties erases the schedule information in the controller, requiring you to download schedules again. If you use Global Modify to change these limits, the affected devices will not be automatically marked for schedule download.
Weekly Schedules - Max Transitions Per Day | The number of transitions a weekly schedule allows in a 24-hour period. The default is 6, which creates 5 schedule segments.
Max Exception Schedules | The number of non-weekly schedules allowed in a controller. The default is 30. The system reserves 7 of these schedules - one for each day of the week.
Max Transitions Per Day | The number of transitions a non-weekly schedule allows in a 24-hour period. The default is 6, which creates 5 schedule segments.
Property Page Text
Show Property Page Text | Check to show this microblock's value on the equipment's Properties page.
Property Page Text | You can edit the microblock description that appears on the Properties page. See "Editing Properties page text using special characters" and "Formatting a microblock property" in EIKON® Help.
BACnet Configuration
Network Visible | Check to allow other BACnet equipment to read or change the microblock's present value. Must be checked for this microblock to generate alarms.
Object Instance | Auto-assign - A BACnet Object ID is assigned by the system. Use specific value - (0–3999999) Assign a number that is unique within the controller.
#### Alarms
Potential alarm source | Check to make this microblock available in the system's Alarm Sources list.
Critical | Determines the color of the system-wide alarm button when the alarm comes in if the alarm's Template field is set to Universal. = Critical = Non-critical
Category | The category you want to use to filter this microblock's alarms on the system's Alarms page > View tab.
Template | Universal - Allows your system to use the Alarm text and Return text defined in the microblock, and the Critical checkbox to determine the color of the system-wide alarm button when the alarm comes in.
Alarm
Alarm Enabled | Check to send a message when this microblock indicates an alarm condition.
Delay Seconds | The time the microblock's present value must remain in an alarm condition before the microblock sends an alarm.
Alarm text | The message displayed on the WebCTRL® Alarms page > View tab when an alarm condition occurs. A relative path is useful for alarm messages that you will reuse in multiple WebCTRL® locations because the path is relative to the item that contains the path.
Alarm requires acknowledge | Check to require that an operator acknowledge alarm notifications on the system's Alarms page > View tab.
Return to Normal
Return Enabled | Check to send a message when an alarm condition has returned to normal.
Return text | The message displayed on the WebCTRL® Alarms page > View tab when an alarm condition returns to normal. A relative path is useful for alarm messages that you will reuse in multiple WebCTRL® locations because the path is relative to the item that contains the path.
Return requires acknowledge | Check to require that an operator acknowledge return-to-normal notifications on the system's Alarms page > View tab.
Fault
Fault Enabled | Check to send a message when a fault condition occurs, such as a misconfigured or non-existent sensor.
#### Simulation Define the value(s) the microblock will use when you simulate the control program.