Worth Data 5000 TriCoder s Manuel du propriétaire Page 63

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Chapter 5: Programming for the RF Terminal
Two levels of programming support offered for the 7802 WiFi Terminal are:
Active X drop-in component. Every necessary function is defined. You just complete the code for each
function. The ActiveX component, along with the Connection Host software, functions as a Server for
managing data traffic to and from one or more terminals (your “terminal network”) and as an interface for
your host application running on your PC. There is no other software required, besides this ActiveX
control, the Connection Host software, and your host application to run a terminal network.
Direct ASCII low-level script commands sent to and data sequences received from the Terminal.
Necessary for a user program running on a web server (a “Cloud” application) or any Application Server
built without the ActiveX control. A complete demo of the “Cloud” application with source code is
provided.
Operating Mode
There are two basic modes of operating the 7802 RF Terminal:
Real-Time Mode and Batch Mode.
“Batch” and “Real-Time” refer to the way data collection prompts are managed by the Terminal.
Real-Time Mode
Real-time mode is just that, where each piece of data collected (scanned or keyed in) requires a response
from the Application Server in order to proceed to the next piece of data. The response from the Application
Server is the prompt for the next data input at the Terminal.
Terminal-Server communication sequence looks like:
Terminal Server
1. Sign-in 2. Send 1
st
prompt
3. Scan data 4. Send 2
nd
prompt
etc.
63
Remember, plan for errors.
Programming languages that can interface with the ActiveX tool include VB, C++, Delphi,
Access, FoxPro, etc.
Make sure you set your compiler for 32-bit compatibility. The ActiveX control is designed to
work with 32-bit (x86) programs.
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