Open Web Net My Home – Daikin Interface
www.myopen-legrandgroup.com
5
Description of each component
MH200N or any other gateway is used to maintain a TCP/IP connection in a public open
language like Open Web Net, this way we can hear any message from the internal BTicino
Bus and translate into TCP/IP language in this case Open Web Net.
346020 this is the power supply of the MH200N and also is needed to be the bus supply of
My Home system. Also any power supply will be fine.
C9451 This is a Ethernet Switch in this case provided by BTicino no need any
configuration.
H4890 is the small My Home Touch Screen, the human interface of My Home System, is
used to control the VRV System from the standard pages provided to manage generic IR
Air Condition Splits. It’s also possible to use the big My Home Touch Screen item H4690.
3456 This device translate the commands from the Touch Screen into the IRSplit protocol,
The IR signal is not going to be used, but it's used to simulate the command received from
the TS. These commands are send to the CoolMaster interface thanks the My Home
Gateway. This tutorial uses 3 of these interfaces, but at least we need one for each
internal unit that has to be controlled.
CoolMaster 1000D Daikin VRV takes the RS232 protocol and translate that into the
Daikin protocol, this interface is reliable to do this job is may be the easiest way to control
Daikin systems, also you can control many others brands using different CoolMaster part
number, in this case we are working with Daikin. This tutorial use the model 1000D which
works with Daiking but if you need to control other brand you just change the model 1000D
to the one you need, 2000S for Sanyo, 3000T for Toshiba, 4000M for Mitsubishi and so
on. All the steeps are the same even the IRSpliter configuration.
DS1206 this device takes the communication from the MH200N and translate that IP
protocol into RS232, also have in his core a piece of software that allows translating only
few specific strings from IP protocol (Home Web Net) into the RS232 that can be ear by
the CoolMaster. This device doesn’t have a AC-DC adapter so is necessary to buy one
12VDC positive center will do the job.
USB to RS232 Converter we are going to use this device only to put the CoolMaster in
simulation mode, and check the project. You need this only in case your PC don’t have
one of them, this device is used to simulate some internal units in the CoolMaster if you
have the actual units connected to the CoolMaster you probably won’t need this device.
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