Edition 54 August 2011


Syncro Focus/Focus+ Repeaters - Network connections



To complement the Syncro and Syncro AS control panels, a range of network repeater panels are available.

The Syncro Response repeater provides a fully functional control and indication repeater panel. From the Syncro Response the user may perform network wide Access level 2 menu operations (including disablements, zone test operations and View devices) as well as Silence, Re-sound and Reset operations.

The Syncro Focus is a basic LCD network repeater which allows specific event types from selected panels on the network to be displayed. This panel has basic controls for “View More Fires”, “View More (other) Events” and “Silence Buzzer”.
The Syncro Focus+ has the same functions as the Syncro Focus, but with the additional Silence, Re-sound and Reset buttons, protected by an Enable Controls key switch.  

The Syncro Focus and Focus+ repeaters are unique in their design by the virtue that they are a single board repeater and this circuit board incorporates the network card functionality as well as providing display and control operations.

All other Syncro products use the K555 network card to enable their networking functions. The K555 network card has its own microcontroller, which buffers and passes network events to/from their control panel onto the secure and optically isolated Syncro data network. The K555 network card also has on-board LED indicators to show the Data In / Data Out paths are healthy.

In order to provide a secure and fault tolerant data link between panels, the network is wired in a data loop, with the “Network Out” of one panel wired to the “Network In” of the next.
In the event that a Syncro / Syncro AS or Syncro Response panel has the incorrect network connections (Out to Out or In to In) the network will fail to initialise at all, until the problem is remedied.

However, the integration of the networking hardware onto the Syncro Focus / Focus+ boards has resulted in the characteristic that repeaters will connect and appear to work correctly even if the network connections to the board have been reversed.
The main indication that there may be an incorrect network connection is that the system may report intermittent network error messages and it is not possible to transfer the Syncro Focus / Focus + configuration file to the repeater via the network.

In the event that it is not possible to transfer a configuration file to the Syncro Focus / Focus+ repeater, it is recommended that the network in / out cables are checked to confirm correct connections with the other panels on the network. If it is not possible to transfer a configuration into the Focus and the network cables are correct, then running an Autolearn procedure on the Focus repeater will in most cases allow you to send data into it. To do this follow these steps:

1, Press and hold ‘More Fires & More Events’ together.
2, Momentarily press the CPU micro switch to reboot the unit & keep ‘More Fires & More Events held down for about 30 second and the display should show ‘Autolearn in progress’.

Once this has completed, proceed to upload the configuration into the Focus.


Download the Syncro Focus manual

Download the Syncro Networking manual




Syncro View Serial Repeater



To complement the Syncro range of repeaters we also have the Syncro View Serial Repeater. This repeater is different to the Response / Focus and Focus+ repeaters because it connects directly to the RS485 Com port, which is provided as standard in all the Syncro and Syncro AS control panels (excluding the Lite variants).

This means that the Syncro View is ideal for applications where a low cost, full function repeater is required.  No additional hardware is required to be added to the panel and the 24 volt View repeater can be powered directly from the host panel. All that is required is a 4 core (2 power, 2 data) cable connection. Up to 15 View repeaters can be connected the Syncro / Syncro AS control panel on a data spur of up to 1200m when using suitable RS485 data cables.

The Syncro View is best described as a remote display repeater. Whatever is displayed on the host panel to which the View is connected will also be shown on the view display. Any button operation on the View repeater will force the main host panel to respond as if the same button were pressed on the main panel.
Unfortunately it is not possible to configure the View repeaters to only show specific events – they will replicate exactly what is shown on their host panel.

In order to avoid different users from competing, some rules apply to the View repeaters

  • In systems where multiple view repeaters are installed, control of the system is permitted on one repeater only on a first come, first served basis. When one repeater has taken control, other repeaters cannot take control until after a period of inactivity has expired.
  • The host Syncro / Syncro AS control panel will always have priority over all Syncro View serial repeaters. Therefore if somebody is controlling the system from a View repeater and then another person starts using the panel, the View repeater will lose its control functions.
  • Whilst the host panel is in Access Level 2, it is not possible to control the system from any Syncro View repeaters. This is particularly relevant if an Enable Control key switch is provided at the main panel.

Note: As the View repeaters use serial data to send button commands to the host panel and pass the panel display back to the repeaters, it is normal that a very small delay will be present when using the View repeater to navigate through the panel menu options.

Consideration should be given to these rules when designing the fire detection system and selecting the most appropriate repeater from the Syncro product family.

Download the Syncro View manual


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