Data Sheet

dScript

dScript User Manual v2.15

TCP/IP client

The tcp/ip client can initiate a communication to a tcp/ip server, we will use an ETH002 as an

example. To do this you need to define a client port like this:

clientport ETH002 "192.168.0.96" 17496 5000

The first parameter is the name of the client port that you will use in your program to refer to

this port. In this case an ETH002, so that's what we will name it. Next is its IP or DNS address

followed by the port number. The last parameter is the timeout in mS that we will wait for a

response. You may define any number of client ports but there is only one socket so only one

port can be connected at a time.

If the ETH002 is on the same network, that is all that is needed. However if the ETH002 were

at another location on the internet, we also need to set up a gateway address.

tcpip.gateway "192.168.0.1"

In this case the gateway is the address of our router since that is how we get out to the wider

internet.

If you have created a server name for your target device, such as yardlights.ddns.net then you

will also need to set up a dns address such as:

tcpip.dns1 "192.168.0.1"

tcpip.dns2 "8.8.8.8"

The first is normally your router address since this will point to the dns given by your isp. Here

we have used Google's public dns server for the second one.

This example uses an analogue input on the dS3484 to control an ETH002 relay which could be

anywhere on the internet.

tcpip.hostname "dS3484"

tcpip.ip "192.168.0.136"

tcpip.mask "255.255.255.0"

tcpip.port 17494

tcpip.dns1 "192.168.0.1"

tcpip.dns2 "8.8.8.8"

tcpip.gateway "192.168.0.1"

clientport ETH002 "yardlights.ddns.net" 17494 5000

analogport Adc1 1

digitalport LedBlue 32

digitalport LedGreen 33

digitalport LedRed 34

string clientOutBuf[10]

string clientInBuf[10]

var clientLength

var yardLightState