Networked Terminals

The networked terminal is an unique alternative to the use of PC's in harsh industrial environments. All in- and outputs have specialy designed electronics to protect the terminal against the noisy environment of the shop floor. The terminal has the following interfaces:

The terminal connects to any UNIX, AS400 or Windows PC with its ethernet interface. The core of terminal is the embedded TCP/IP stack wich supports following protocols:

Telnet client VT00

Telnet client VT100 is the protocol you use to access remote hosts on the network. It is very common in AS400 and UNIX environments. DV-Micro has developed its own optimised Telnet Server for the Windows OS.

Typical applications:
Weight registration before shipping
VT100 terminal for AS400
Printing on shop floor

FTP server

FTP (File Transfer Protocol) is the simplest and most secure way to exchange files over the Inta/Internet. The FTP server togheter with the Flash File System is like a filing cabinet for storing files.
Two special cases:

When the file has a ".CMD" extention, the file is considered as a command file and executed.
When the file has a "A", "B", "C" or "D" extention, the file redirected to the serial port A, B, C or D.

Typical applications:
Punch controls label printing
Print sac/pallet labels on demand

FTP client

On operator has a view on the label library in a central PC with the buildin FTP client. After selecting a label, the operator will be prompted for entering data in label. Only then is the label send on the printer.

Typical application:
Central library of labels

RAW printing (Socket API)

The Socket API is a very simpel transfer protocol. It is widely supported by most Print Server manufacturers, with the Hewlett Packard JetDirect setting the de facto standard.
The Socket API is extremely simple:

The user establishes a connection to TCP/IP port (9100) on the terminal. This connection may be refused if the terminal is busy printing a job.
When the network connection is established the terminal flushes all internal buffers and readies itself to receive a new job
When the connection is made, all bytes sent to the connection are transferred to the external interface
The connection is bidirectional, and information sent to the external port by an external device will be transferred back over the data link

Typical application:
ERP/MES to label printer connection

LPR printing

LPR printing is a method by which you "talk" to the printer directly through the IP network protocol. By supplying your terminal setup with the IP address of the specific printer you are trying to install, it can then spool documents to that printer based on that IP address.

Typical application:
LPR printing

XML server

XML, among other things, provides a standard way to exchange data. So why not using it for open/closing relays, sending data to a serial port,...
The build-in XML server will just do that.

Typical application:
Data collection system

XML client

If the action is in the terminal, the build-in XML client can notify a XML server about inputs changes or that a data stream has arrived on a serial port.