### Binary Network Output 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 | Network I/O microblocks
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What it does | Writes a binary (digital) value to a specific address on the network. You can address the microblock to write to any I/O point value, status or parameter microblock value, BACnet object property value, or equivalent value from another supported protocol that is not marked "read only". The target value may be in the same control program, in another control program in the same controller, or in another Automated Logic® controller or third-party device on the network.
Click for details below How it works Properties Tips and tricks
#### How it works At the interval you specify in the Refresh Time field, this microblock writes to the value at the Address you specify. The target must not be "read only". The target can be a BACnet object property or a third-party value (if the controller supports the third-party protocol). See To format a BACnet address or the applicable third-party protocol Integration Guide. If you want the microblock to write to its target based on COV (Change of Value), check this microblock's COV Enable checkbox on the equipment's Properties page Network Points tab.
#### 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
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.
Address | The address of the target BACnet object property or third-party value (if the controller supports the third-party protocol). See To format a BACnet address or the applicable third-party protocol Integration Guide. The microblock writes to its target at the Refresh Time interval unless you set up writing based on COV (Change of Value) in the WebCTRL® or Field Assistant system. Make sure that the target is not marked "read only". NOTE For a target in the Automated Logic® controller, you can specify the network microblock's Address in: Your WebCTRL® or Field Assistant system - Select the target in the tree on the microblock's Properties page Details tab. The system creates the address for you. The EIKON® application - In the microblock's properties The SiteBuilder application - If your product supports source trees and you are using them, SiteBuilder creates the address for you. NOTE You can uncheck the Editable field in the EIKON® Property Editor to prevent editing of the address in the WebCTRL® or Field Assistant system. TIP If you are integrating to multiple identical third-party devices, you can copy the equipment for the first device and then let the system help you address the Network I/O microblocks in the copies. See "Create a control program" in the BACnet Integration Guide.
Inactive Text | The Inactive Text your system displays when the microblock's output is off, or false.
Active Text | The Active Text your system displays when the microblock's output is on, or true.
Communications Enabled | Check to enable network communications for this microblock. Uncheck when troubleshooting.
Refresh Time | The interval at which the microblock writes to its target. Not used if you check the microblock's COV Enable checkbox on the equipment's Properties page > Network Points tab to write based on COV (Change of Value).
Show Property Page Text | Check to show this microblock's value on the equipment's Properties page.
#### Tips and tricks To address microblocks using source trees You can address a network microblock in the EIKON® application to target a microblock in its parent application on the source tree.
Format: Example: | exp:~equipment/~<source tree reference name>/~parent/~target/<target microblock reference name> exp:~equipment/~cool/~parent/~target/supply_air_temp
By using this format in the EIKON® application, the WebCTRL® application will read the target microblock value from the parent application. This method is much faster than going to each zone individually in the WebCTRL® interface to address the network microblocks. For example, this allows you to create generic zone applications that can be reused not only for all zones under a single air handler, but for all zones under any air handler.