Help Topics

Help - About

Overview:

This software system is known as HMIServer, and has the following capabilities:

Includes a built in web based HMI.
Field device communications drivers are built in.
Includes extensive on line documentation.

Field Device Communicatinos

Drivers for field device protocols are built direction into HMIServer and do not require any additional software.

Supported Protocols

HMIServer supports the following protocols:

Modbus/TCP
SAIA Ether SBus

Client and Server:

HMIServer supports field device protocols in both both client and server forms. The client version acts as a client (master) when talking to the field device. The server version acts as a server (slave) and must be actively polled by the field device. Both versions offer otherwise similar capabilties and the choice of which to use depends on whether a client or server is needed to work with the field devices.

System Requirements:

The software has the following system requirements:

Will run on any computer capable of supporting Python 2.5 or 2.6.
Hard drive space requirements for the basic software (excluding Python) is approximately five megabytes.
The required speed for the computer will depend upon the size of the HMI program, the number of data items monitored and type of protocols used. In typical applications CPU usage is negligible.

Licensing:

This software licensed under the GNU General Public License (GPL) and is free software. See the included license document for more details as to the applicable version and terms of the license. You may copy and distribute this software freely provided you adhere to the terms of the license.