Communications
0845 021 2340
sales@messagemaker.co.uk
Depending on the type of sign selected the following methods of communication are generally available:-

Infra Red: This can either be in the form of a keyboard or hand held remote (similar to your TV controller). This method of communication is generally used on single line displays where the message only needs updating occasionally.

RS 232: More commonly known as a serial interface, this allows the sign to be updated via a standard cable which is permanently connected between the sign and your PC or Laptop. This method of communication is only recommended up to a distance of 25M between the Sign and PC.

RS422/RS485: This is also a serial connection similar to the above but allows a greater distance between the sign and PC – up to 100M.

TCP/IP: This is also known as an Ethernet or a LAN connection. By allocating a static IP Address to the display it can be connected to an existing network and communicated to from any PC with access to the network, available in 10 or 100BaseT configurations.

Telephone Modem: By using a modem you can effectively create a world wide communication system by utilising the existing telecom network.
Sandard call charges will apply.

Plug in keyboard: A simple hand held keypad plugs into a port on the display. Text is entered from the keypad. Once text is entered the keypad can be removed. Advantage is simplicity of operation. Disadvantage is that it's quite time consuming.

 
 
 


GSM Data Modem using PC software: Subject to adequate reception the radio modem simply takes
the place of the phone modem. Using a digital
data transmission network which is fully approved
and will not interfere with other radio transmissions. There is a monthly subscription fee to the network.

Short distance radio or DECT communications:
This uses licence exempt radio modems to achieve wireless transmission of communications. Very
useful if cabling is impractical. Two versions are available: Short distance radio modems which work
up to 250M away in clear line-of-sight transmission applications, or more powerful versions that work up to 4km.

 Radio Modem: This is very similar to a telephone
modem set up with the existing telecom network
being replaced by a wireless radio wave. A license
may be required depending on distance and type
of data being transmitted.

Custom interface solutions can also be provided including Fibre Optic, Newswire, Datanet, Packnet
and Parallel input via a PLC.