DASY

DASY in IP-Network

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Introduction and presentation

This document includes a presentation of all possible generell applications of DASY in the IP-network. All necessary settings of the network connections will be explained.
This document shall be a help and offers answers to questions concerning the configuration (Ports, IP-Adresses,...).

DASY on a single computer

IP Single DASY can be installed on one single computer. All of the system layers are therefor applicated on this computer. The communication between the layers UD (User Driver) and AP (Applications) on an single system is the same as in the network using the IP-Protocol. Therefore, the Internet-Protocol has to be installed on the computer! As IP-target address on the system within DASY`s programs you should always predefine the address on 127.0.0.1. This Local IP Address is always available, if IP is installed.

DASY-Layers on a standalone computer

IP Single Layer

DASY in the network

IP Network

The data exchange between AP and UD is realized by using the IP-Protocol (Internet Protocol) as "Socket Application". HW, CD and UD are installed on the same computer to attain a fast data connection from the measuring card to the local database of the UD. The network is sufficient for the data exchange to the applications (Ap). Slow networks or switched lines cannot interfere the measuring process on the UD. Natural, applications on the UD can be activated additionally (That is, because it is an IP!).

DASY-Layers in the network

IP Network

Establishing a connection between UD (User Driver) and AP (Application)

IP Network


AP establishes a connection to the UD. The AP therefore uses the IP-Address of the UD-Computer and the port on which the UD in the network will listen.


In case of a "connect", the UD provides a new port to the AP (above 1024).


By using this new port, AP remains in contact with the UD. ("IP-Address" and "Port" are forming a so called "Socket", as where every program discretely can be found in the network.)

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Configurations of the IP-Connection

IP Network

UD-Configuration AP-Panel-Configuration
  • Port number, on which the UD will listen (e.g. 800,801,900..)
  • On the UD adjusted port number (see left side).

  • IP-Address of the UD. (local=127.0.0.1, ....)

SUGGESTION: The IP-Address of the UD can be requested on the UD-Computer in the DOS prompt by using the command on "netstat –rn".In the file "c:\windows\services" is a listing with often used ports.

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Messages

still vacant

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Examples and further links

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© Dipl.-Ing. Andreas OffenbergFile: net_en.htm, Date: 31.07.2000