Anyone Know of Large Serial Port Splitter

TurnipTruck · December 2006

Greetings,

An answer I made to another post reminded me of something I have been looking for for a while...

Does anyone know of a larger serial port splitter? Something around 1x8 with RS-232 ports.

I am not looking for the router/manageable type, just one that passes all data bi-directionally.

Thanks.

bano · December 2006

TurnipTruck wrote:

Greetings,

An answer I made to another post reminded me of something I have been looking for for a while...

Does anyone know of a larger serial port splitter? Something around 1x8 with RS-232 ports.

I am not looking for the router/manageable type, just one that passes all data bi-directionally.

Thanks.

These guys may have what you need.

http://www.bb-elec.com/welcome.asp

AutoTech · December 2006

I've used this with no problems...

bano wrote:

These guys may have what you need.

http://www.bb-elec.com/welcome.asp

http://www.pulsarlight.com/DataSplitter.htm

TurnipTruck · December 2006

AutoTech wrote:

http://www.pulsarlight.com/DataSplitter.htm

Unfortunately, this is a one-way device, typicaly used for DMX control of lighting systems. I need data back from the devices.

B & B Electronics only has a 1x2 splitter, unless you get into managaed routers.

NMarkRoberts · December 2006

TurnipTruck wrote:

Does anyone know of a larger serial port splitter? Something around 1x8 with RS-232 ports.

Sounds like an Axcent3 to me!

TurnipTruck · December 2006

NMarkRoberts wrote:

Sounds like an Axcent3 to me!

I was considering that, but I need quite a few. If the Axcent 3s would be controllable, they would suck up 14 Axlink channels a piece. To run them as masters with an Axcess program making them do what I need seems a bit unreliable.

Nice thought though!

ericthompson · December 2006

RS-232 Splitter

Just curious...so what you are looking for is to turn one port, say on a NI-700 into 8 ports? How would Netlinx no how to address the 8 different pieces of hardware?

Just a nOOb question...

TurnipTruck · December 2006

How would Netlinx no how to address the 8 different pieces of hardware? QUOTE wrote:

The eight connected devices are addressable. The string sent contains a byte that says which device should respond to the message. They all receive the message, but only one will process it. Likewise, the devices do not transmit any data unless requested. Therefore when data comes in from one, you know that it is coming from the device you just spoke to.

B_Clements · December 2006

What kind of price per RS232 port are you looking for?

Have you looked at the all the Ethernet to RS232 devices out there as an option?
They are about $100.00 per port.

TurnipTruck · December 2006

B_Clements wrote:

What kind of price per RS232 port are you looking for?

Cheap. I have a load of flat screens for a restaurant that are all addressable 1-32. A simple splitter/combiner would fit the bill. I cannot beleive it is so hard to find one.

alexanbo · December 2006

Can you maybe do something like send it out RS-485 and convert to RS-232 at each lcd..

http://www.bb-elec.com/product_family.asp?FamilyId=15&TrailType=Sub&Trail=12

TurnipTruck · December 2006

alexanbo wrote:

Can you maybe do something like send it out RS-485 and convert to RS-232 at each lcd

Now there's a good idea! Better yet, 422 cascaded to a convertor on each set.

joelw · December 2006

Serial Port Server Solution

I've used about ten of these, and have had good experience with them:
http://www.sena.com/products/device_servers/external/hd_ps_x10/

Less than $100 per port. You can bridge ports together via Ethernet with up to max eight clients per port on the PS810. You could tie seven ports in one box to seperate port in same box. They also work quite well as serial port expanders. For lowest latency use UDP on a dedicated VLAN. I've even used them for camera PTZ control with very acceptable results.

This product series would do what you need, as they support up to 32 client connections per port:
http://www.sena.com/products/device_servers/external/sts/

For both series each port can be configured as client or host. You would set master port as host, then setup the other required number of ports to connect to the master port. All within the same box.

Anyone Know of Large Serial Port Splitter

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