Frequently Asked Questions

Check the 1DST Flag to ensure that it is active if it is currently Daylight Savings Time in your region.

These flags can be found in the “System/System’s Flag View” menu.

E.g. 1L1 is used to monitor for, and alert you to, the absence of the phone line dial tone.

These flags can be found in the “System/System’s Flag View” menu.

The 1J1 Flag monitors the Davicom Cortex unit’s temperature. An alarm may be set if the unit installation location or condition causes temperature concerns.

Click below to see more.

https://dex.davicom.com/kb/hardware-monitoring-menu-explained-cortex-360/

1P4, 1P5, 1P6, 1P7 Flags are used to monitor the Aux +5V, Aux +12V, 12V relay, and Main +3.3V respectively. An associated alarm can be used if desired.

Click below to see more.

https://dex.davicom.com/kb/hardware-monitoring-menu-explained-cortex-360/

A 1P3 Flag is recorded in the system log to indicate that the unit has been rebooted. A 1P8 Flag appears in the log to indicate that a power cycle has occurred. 

Click below to see more.

https://dex.davicom.com/kb/ac-power-fail-menu-explained-cortex-360/

1P2 is the Flag for the main input voltage. It can be used to raise an alarm if the unit’s main power goes out of limits.

Click below to see more.

https://dex.davicom.com/kb/hardware-monitoring-menu-explained-cortex-360/

1P1 is the Flag for monitoring the AC power on a desired circuit. It can be used to raise an alarm if that circuit’s power fails.

Click below to see more.

https://dex.davicom.com/kb/ac-power-fail-menu-explained-cortex-360/

Depending on the OS, a missing Microsoft 2010 C++ Redistributable can result in this message. Often, simply installing the Redistributable now will solve this issue. 

Click below to see more.

https://dex.davicom.com/documents-downloads/software-firmware/

The Microsoft 2010 C++ Redistributable must be installed before installing DavLink. If this is not done, a “bad license key” message will be displayed after entering a valid license key.

Click below to see more.

https://dex.davicom.com/documents-downloads/software-firmware/

If all the front panel LEDs are lit up and the Pause and Local are blinking, this could indicate a bricked unit. Verify with a manual Factory Reset.

Click below to see more.

https://dex.davicom.com/wp-content/uploads/2023/04/Davicom_Version_556d_Upgrade.pdf

If unable to connect via the front port after a reboot or power cycle, try disconnecting and reconnecting the USB cable to reestablish the Comm Port ID.

Click below to see more.

https://dex.davicom.com/wp-content/uploads/2023/04/Davicom_Version_556d_Upgrade.pdf

One way to correct this is with a manual factory reset: step 13 of the 5.56d firmware upgrade document. 

Click below to see more.

https://dex.davicom.com/wp-content/uploads/2023/04/Davicom_Version_556d_Upgrade.pdf

If you’re using G-Mail, there were security changes made by Google in May 2022, that could affect Davicom units with recent network or site changes.

Click below to see more.

https://dex.davicom.com/kb/gmail-security-changes-on-may-30th-2022/

A configuration can be lost after a reboot or power cycle if the RAM battery voltage is too low. A low voltage flag can be used. 

Click below to see more.

https://dex.davicom.com/kb/how-your-davicom-unit-can-tell-you-if-its-ram-battery-is-getting-low/

When analog input 12 is used to monitor the RTC battery, it can then be configured to raise the alarm.

Click below to see more.

https://dex.davicom.com/kb/how-to-set-the-internal-jumpers-and-dip-switches-cortex-320/

The B1 RTC flag is factory set in the Davicom Cortex 360 (all versions) to raise a major alarm if a low condition is identified.

Click below to see more.https://dex.davicom.com/kb/hardware-monitoring-menu-explained-cortex-360/

To observe the RTC battery voltage, go to Inputs / Hardware Monitoring and note the 1B1 flag value.

Click below to see more.https://dex.davicom.com/kb/hardware-monitoring-menu-explained-cortex-360/

The unit should be plugged into a 12Vdc power source with the “Activity” light blinking before the battery is installed.

Click below to see more.

https://dex.davicom.com/kb/cortex-series-rtc-battery/

During site maintenance, this button will disable all alarms to prevent false alerts when replacing, installing, and testing equipment.

Click below to see more.

https://dex.davicom.com/kb/what-is-a-workspace-cortex-360/

If using alarms by telephone, ensure that the modem is functional by calling the site by phone and verifying that the unit answers and allows login.

Click below to see more.

https://dex.davicom.com/kb/cortex-dtmf-commands-and-controls/

If using alarms by telephone, ensure that all contacts are entered correctly and that the physical line is connected well.

Click below to see more (starting around step 12).

https://dex.davicom.com/kb/how-to-configure-an-alarm-call-list-cortex-360/

If using alarms by telephone, ensure that your unit is a Davicom Cortex 360-1 or a Davicom Cortex 320-1. This information is found in the unit’s Serial Number label on the side of the unit.

If using emailed alarms, ensure that you have an email server and DNS server configured in your unit.

Click below to see more.

https://dex.davicom.com/kb/ip-configuration-menu-explained-cortex-360/

Ensure that your alarm call lists are set up correctly and updated.

Click below to see more.

https://dex.davicom.com/kb/how-to-configure-an-alarm-call-list-cortex-360/

Ensure that the alarm call list is set to enabled.

Click below to see more.

https://dex.davicom.com/kb/alarm-call-list-menu-explained-cortex-360/

Make sure that the “alarms disabled” button on the GUI is not blinking red. This frequent error can be caught quickly, saving time and frustration.

Click below to see more.

https://dex.davicom.com/kb/what-is-a-workspace-cortex-360/

Units are not factory set to the destination time zone. Sometimes, a simple time and date update is all that’s required.

Click below to see more.

https://dex.davicom.com/kb/date-time-and-location-menu-explained-cortex-360/

A missing RTC clock battery is one reason this could be true. Shipments by air cannot contain lithium batteries. This battery is widely available and easily installed. Return next week for another solution.

Click below to see more.

https://dex.davicom.com/kb/cortex-series-rtc-battery/

Check with your email service provider. There could be numerous external problems such as port blocking and security restrictions or an SMTP host that is down. Return next week for another solution.

Click below to see more.

https://dex.davicom.com/kb/ip-configuration-menu-explained-cortex-360/

This can be a DNS server problem. Check the DNS server listed in your IP parameters. You could try using the DNS server address 888, permanently or as a test. Return next week for another solution.

Click below to see more.

https://dex.davicom.com/kb/ip-configuration-menu-explained-cortex-360/

Any major commercial web browser can be used to access the Davicom Cortex but it is optimized for Google Chrome and will perform best with Chrome.

Download the new Davicom DEX Wiki for Articles, Datasheets, and Guides on all of our current products. After downloading, all you’ll need is a browser to view them, even without internet access!

Click below to see more.

https://dex.davicom.com/dex-wiki/

Download the new Davicom DEX Wiki, including a personal journal for managing your Davicom products and keeping track of the information that you find most helpful.

Click below to see more.

https://dex.davicom.com/dex-wiki/

Davicom Cortex 360s have a convenient hardware monitoring menu on the OLED display. Both Davicom Cortexes allow for hardware monitoring in the workspace, providing information on several internal parameters.

Click below to see more.

https://dex.davicom.com/kb/hardware-monitoring-menu-explained-cortex-360/

Many members of the Davicom community enjoy having a non-interactive display of their remote sites on a monitor wall. You can easily do this too using the secure Web View feature.

Be sure to download and run the Microsoft Redistributable before installing the DavLink software upgrade. If you’re still having difficulty, give us a call or send an email. We’re always happy to help.

Click below to find the redistributable.

https://dex.davicom.com/documents-downloads/software-firmware/

This is normal operation. The DavLink software is optimized for low bandwidth IP communications and loads a default workspace.

Click below to see more.

https://dex.davicom.com/kb/how-to-change-the-davlink-6-default-workspace/

You can easily download the desired workspace from a Davicom Cortex and set it as the default in DavLink.  

Click below to see more.

https://dex.davicom.com/kb/how-retrieve-workspaces-from-a-cortex/

It’s easy to chat about what you see in your Davicom Cortex with anyone else who’s connected (except “Web View” users). You’ll find the blue chat bubble at the top right, under the Logout command.

Click below to see more.

https://dex.davicom.com/kb/using-the-built-in-chat-communications-feature/

Users logged in at Operator level or above can “ping-pong” control to provide collaborative remote training or solution generation. Simply use the “Take Control” command in the Administration window of the System menu.

Click below to see more.

https://dex.davicom.com/kb/users-menu-explained-cortex-360/

Up to four users can be logged into a single Davicom Cortex at the same time. Only one user will have the message “In Control” in the top right corner of the screen and can thus provide examples for remote training.

Click below to see more.

https://dex.davicom.com/kb/users-menu-explained-cortex-360/

We sometimes get calls from users unable to take control of a unit or respond to alarms. Often these users are logged on at a “Viewer” level. “Operator” level or higher is needed to control the unit.

Click below to see more.

https://dex.davicom.com/kb/users-menu-explained-cortex-360/

If a command is functioning properly, you should see a record of its activation in the system log. If the log doesn’t show the command, there may be a simple error with the logic gates.

Click below to see more.

https://dex.davicom.com/kb/how-to-control-relays-with-davicom-logic-cortex/

Input workspace icons (e.g. 1A01 or 1D01) will be red, yellow, or blue for active conditions. Red signifies major alarms, yellow indicates minor alarms, and blue represents a command condition.

Click below to see more.

https://dex.davicom.com/kb/cortex-360-user-interface-and-menus/

Input workspace icons (e.g. 1A01 or 1D01) will be grey if “disabled” by a user; green if “enabled and normal”, and orange if locked by a qualifier (e.g. an inactive input). We’ll discuss Active conditions next.

Click below to see more.

https://dex.davicom.com/kb/generic-inputs-menus-explained-cortex-360/

Relay workspace icons (e.g. 1R01) will be red if “forced on” by a user, or a programmed condition; yellow if “forced off”, and orange if set for pulse-only mode.

Click below to see more.

https://dex.davicom.com/kb/what-do-the-physical-relay-colours-mean-cortex-360/

Relay workspace icons (e.g. 1R01) will be green when controlled by an input and in a Normal (not energized) state; blue when controlled and in an Active (energized) state, and white if set to manual mode.

Click below to see more.

https://dex.davicom.com/kb/what-do-the-physical-relay-colours-mean-cortex-360/

When both of these lights are blinking, your Davicom unit has been placed into local mode to protect technicians while performing activities like tower maintenance. Local mode can be canceled only by pushing and holding the local button on your unit or remotely by a Supervisor.

Click below to learn more about your unit’s front panel.

Davicom Cortex 360     https://dex.davicom.com/kb/cortex-360-front-and-rear-panel-descriptions/

Davicom Cortex 320 https://dex.davicom.com/kb/front-and-rear-panel-descriptions-cortex-320/

The blue activity LED is the heartbeat of your unit and a pulsing LED indicates a functioning processor. If you don’t see a heartbeat, try a power cycle. If needed, next try a rescue key with an image file. If neither works, we’re standing by to help.

Click below to learn more about your unit’s front panel.

Davicom Cortex 360     https://dex.davicom.com/kb/cortex-360-front-and-rear-panel-descriptions/                

Davicom Cortex 320 https://dex.davicom.com/kb/front-and-rear-panel-descriptions-cortex-320/

A steady LED indicates an alarm condition is present but a blinking LED specifically indicates lost communications with a Modbus client.

Click below to learn more about your unit’s front panel.

Davicom Cortex 360     https://dex.davicom.com/kb/cortex-360-front-and-rear-panel-descriptions/

Davicom Cortex 320 https://dex.davicom.com/kb/front-and-rear-panel-descriptions-cortex-320/

DavLink loads its workspace from within the computer, whereas the browser opens its workspace from the Davicom Cortex itself.

Load the web certificate to your browser. Please refer to this article.

How to connect to a MEXM in RTU mode

To connect a MEXM to a Davicom unit in RTU mode, use the USB cable provided with the MEXM and connect it between the MEXM USB connector (Device) and the USB connector located on the rear panel of the Davicom unit (Host)…

Read More

How to connect to a MEXM in TCP mode

Connecting a MEXM to a Davicom unit via an Ethernet switch or an existing network infrastructure requires the use of a straight Ethernet cable (not included with the MEXM)…

Read More

Visit the Software & Firmware page.

Most questions are quickly answered by our technical support team but for complex questions, we may request copies of the config, system log, workspace, and custom log, plus a screenshot of the “About” window.

Workspaces are GUI display templates that can show the state and/or the value of every Input, Output, or Flag that exists in the Davicom Cortex 360. Workspaces can show different content, based on a user’s preferences, or display device. For example, specific workspaces can be set up for site information display on smartphones, tablets, laptops or large-screen monitors.

Workspaces can be created by users. See this article.

At the initial connection, Davicom Cortex-Series products will typically transmit about 850kB in web-browser mode and 83kB in DavLink mode. Following this initial connection, typical data throughput is 1.5kB/sec in web mode and 3.7kB in DavLink mode.

1- One of your Modbus devices may have a Communication Loss. Please refer to this article to see if it is the case.

or

2- The USB adapter which communicates with the Modbus device has a communication failure. Please refer to this article to see if it is the case.

Connecting locally to a Davicom Cortex 360

In order to connect to the Davicom Cortex 360 through the local USB port, via telephone or over a narrowband radio or serial link, DavLink 6 is required. For the USB connection, Davicom’s USB driver is also required. It is included on the installation CD or it can also be found on the Software & Firmware page. Once you have installed the USB driver, please connect your computer to the Davicom Cortex’s front-panel USB port and then start DavLink. Once started, DavLink will display its main screen. Go to the upper left of this screen to see…

Read More (Section 1.3)

Connecting locally to a DV-200

If you are using your computer’s USB port, you will need a Type A/B USB device cable (version 1.1 or above). If you are using your computer serial port, you will need a male-female 9-pin serial cable (not a null-modem cable)…

Read More (Section 2)

How to connect to a Davicom Cortex 360

Communications with Davicom’s Cortex 360 for configuration and control can be achieved via an Ethernet connection or over a USB port. The Davicom Cortex 360 interface uses HTML 5 in both cases because DavLink 6 also embeds this technology. DavLink 6 is backward compatible with legacy DV-200 series…

Read More

How to connect to a DV-200

In order to get your new DV-200 unit ready for configuration, you need to connect your computer directly to the unit. The initial configuration of a Davicom unit cannot be performed remotely…

Read More

The table below is for the Davicom Cortex Series.

The 1S1 Flag can be used along with the Davicom CORTEX Series’ Virtual Logic Gates to send an alert for each status change.

These flags can be found in the “System/System’s Flag View” menu.

The 1W1 Flag can be used along with the Davicom CORTEX Series’ Virtual Logic Gates to send an alert after 5 consecutive failed login attempts.

These flags can be found in the “System/System’s Flag View” menu.

The 1Y1 Flag can be used along with the Davicom CORTEX Series’ Virtual Logic Gates to send an alert after a failed synchronization with the NTP server.

These flags can be found in the “System/System’s Flag View” menu.

This has happened before when a remote site’s phone number was placed on a suspected “Spam Caller” list. Please check with your provider.

Contact us for more information.

It’s best practice to copy and paste DavLink License Keys to avoid erroneous manual entry. An incorrectly entered key could be the reason for these messages.

Click below to see more.

The 1Y1 Flag can be used along with the Davicom CORTEX Series’ Virtual Logic Gates to send an alert after a failed synchronization with the NTP server.

These flags can be found in the “System/System’s Flag View” menu.

When receiving a Major alarm call from your Davicom Cortex, simply press 77# on your phone’s keypad. Then simply follow the instructions given by your unit.

When receiving a Major alarm call from your DV-200, simply press 77x# on your phone’s keypad then hang up. The “x” is replaced by the number of hours you want to set the snooze.

The MIOP300 IO terminal block requires that the A- input is tied to ground for proper measurements.

It’s as simple as powering up your unit after inserting a USB drive with the firmware image file. Please fully read the appropriate document linked before proceeding.

This is a simple procedure thanks to the Davicom Cortex 360’s OLED screen. Two methods are possible, detailed in the procedure found at the link below.

This is a simple procedure using the unit’s front panel. Two methods are possible, detailed in the procedure found at the link below.

There are two methods possible, using the system menu or the unit’s front panel. Detailed procedures can be found at the link below.

Two methods are possible; using the system menu or the unit’s front panel. Detailed procedures can be found at the link below.

Two methods are possible; using the .dav file or the .hex files. You can find both methods explained in detail at the links below.

https://dex.davicom.com/wp-content/uploads/2023/04/Davicom_Version_556d_Upgrade.pdf

If you’ve recently upgraded the firmware in your Davicom Cortex, you may need to clear the browser cache. 

The DavLink software version must be the same or higher than the Davicom Cortex FW version to operate correctly. If these don’t match, please update your DavLink to the most recent version.

These are used to connect the I/O signals that you plan to monitor and control with your Davicom CORTEX. This may include analog and digital inputs and relay outputs.

This can be a DNS server problem. Check that you have a DNS server listed in IP parameters. The DNS server address 8.8.8.8 could be used permanently or as a test.

We offer a PDF showing the I/O pinout for the Davicom CORTEX units. It can be found at the link below.

The Ctrl+ F5 command will refresh the browser cache. Sometimes the Davicom Cortex web resources do not update fully after a firmware upgrade and a refresh helps.

Both modes inhibit automations. Local mode also locks out control by remote users to ensure personnel safety during site maintenance but permits local connection and relay activation.

Only an Administrator, Supervisor, or Director can take control of a unit to remotely cancel Pause mode. This is a safety feature to ensure that local technicians can inhibit automations during site maintenance.

Only a Supervisor or Director can take control of a unit to remotely cancel Local mode. This is a safety feature to ensure that local technicians can lock out the units during site maintenance.

If you want to monitor the RTC battery, analog input 12 is used.

Click the link below to see more.

https://dex.davicom.com/kb/how-to-set-the-internal-jumpers-and-dip-switches-cortex-320/

Do you need the default IP address to connect to your Davicom RTU?

The default IP address for all Davicom RTUs is 192.168.1.210. This is needed after a factory reset or when connecting to a new unit by IP.

You can find the license key in the DavLink menu under Help > License Key.

The default IP address for all Davicom RTUs is 192.168.1.210. This is needed after a factory reset or when connecting to a new unit by IP.

Yes, both of these software programs support Windows 11.

Yes, DavNet supports Windows Server 2025.

For a CORTEX connected to the internet, you can click on the “?” in the GUI to see a dropdown with the Reference guide and a link to the DEX portal. If not connected to the internet, you can click the Help menu in DavLink 6 and then select Help Topics to open the reference guide.

In DavLink, click the “?” on the configuration window for any IO then use the altered cursor to select anywhere within the window. This will open the applicable section of the reference manual. Alternatively, you can click the help button and select from the menu provided.

When connecting to a Davicom RTU (CORTEX or DV-200) there is a Configuration Wizard that can be used to set-up a Davicom RTU. Contact Support for help getting started.

If an admin user is connected, the system generates a popup notification requesting acknowledgment. If confirmed within 30 seconds, the system considers it resolved and prevents it from proceeding to notification.

 If the alarm isn’t acknowledged within 30 seconds or the popup is closed, the system follows the preconfigured alarm call list, notifying recipients as programmed.

GETs show the raw value, while List View applies the B coefficient. This correction ensures accurate readings based on calibration settings.

Each ACL can include up to 10 recipients. To configure:

1. Navigate to the Alarm Call Lists menu.
2. Select the desired list and click ‘Setup’.
3. Add recipient details, specifying the notification method.
4. Set the call-out sequence to determine the order of notifications.

Remember to save your configuration after making changes.

Enabling ‘Do List Once’ ensures that the Cortex goes through the recipients list only once per alarm event, notifying each recipient in the specified order without repeating the cycle.

 Once an alarm proceeds past the alarm popup stage, it follows the programmed sequence unless acknowledged by an authorized user through the appropriate interface.

If the system is unattended or if a view-only user is connected, the alarm bypasses the alarm popup and proceeds according to the alarm configuration and call list settings.

https://dex.davicom.com/kb/alarm-calls-dv-200/