How to send contact closure signals to a remote location across a LAN

Tuesday, 3 June 2014  |  Admin

A common problem encountered by alarm panel installers is how to transmit a digital contact alarm signal across a site to reproduce the signal at some remote point using the sites Local Area Network. Perhaps a remote fire alarm or security sensor with a standard relay output has to be connected to the alarm panel located in a different building. Fortunately, Audon Electronics has a number of products that achieve just this!

The TCW122B-RR is an Ethernet based I/O module that has two digital inputs and two relay outputs. Two units can be paired in order to seamlessly send digital IO data to the other paired device. So, a contact closure at one unit, say from an alarm panel, will activate the corresponding relay at the other unit, to say sound a siren. Data is bi-directional, and digital data can be sent back too.

Sometimes, a number of digital contact outputs in different locations need to be sent to a common point or perhaps a central control station needs to send contact closure signals to several remote devices, each remote from each other. In this situation, devices from the "Controlbyweb" range come into their own.

Any digital input on a "Controlbyweb" module  can be linked with any other "Controlbyweb" modules' relay output. So, for example, the WEBIN5 module has 5 digital inputs each of which can be linked with up to 5 remote single channel WEBRELAY modules. Or perhaps the single digital input on the WEBRELAY can be linked with one of the relay outputs on the 4-channel WEBRELAYQUAD module.

If higher channel counts are your bag, then perhaps the X-332 is the device to consider - these devices each have 16 digital inputs and 16 digital outputs and includes full calendar scheduling with 100 programmable events to turn devices on and off at preset times.

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The LAN-AD16fx is a professional but low cost Ethernet based multi-function data acquisition device capable of recording 16 analogue signals with a resolution of 16 bit and a sampling rate of 250kHz, ideal for high speed data acquisition and transient recording.

In addition the LAN-AD16f offers a synchronous acquisition of digital signals.The LAN-AD16fx is equipped with 32 digital channels which can be used as input or output. Control functions can be run by via digital outputs.

All these digital signals are acquired and stored in the sampling clock in synchronism with the analogue channels and also in real time.

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For the process control engineer Arduino based control system may be an interesting and cost-effective alternative to traditional big-name PLC offerings. By adopting the Industrial Arduino PLC route, the Process Control Engineer can reduce control system costs, offer a increase in functionality and improve continuity of supply.

Audon Electronics Ltd can supply such Industrial Arduino PLCs - see here for more information >>

Friday, 20 May 2016  |  Admin
Building Lockdown over a LAN - no new wiring needed

Instantly trigger a lockdown of an office or school facility with a physical panic button, or with the CBW LockDown app from any location in the building or campus using Audon Electronics Ltd products.

Audon Electronics ControlByWeb products are highly versatile and have a variety of input/output options to fit your existing system. There are also many custom control and monitoring features that can be added. For example, once a building lockdown is enabled, you can configure it to only be disabled by a password-protected web control panel.

This architecture takes advantage of the existing IP network and wiring infrastructure in a school or office so no new wiring or expensive installation re-work is required!

Monday, 14 September 2015  |  Admin
Thursday, 29 May 2014  |  Admin

A new range of 1-wire based sensor interfaces have been introduced for use with the TCW240B Ethernet control unit.