roberto,
I was just giving an example of securing scada nodes across a wireless topology.
Here is another alternative. This is a technology called junglemux from GE.
It's a SONET based system that supports wireless. One example is a light rail systems that uses wireless to communicate with...
I personally would use existing WiFi 802.11g standard. As far as security goes I would lean in the direction of vpn tunneling. Take this scenario for example.
You have a scada server and 10 view nodes and you want to use wireless to connect the machines. For this example lets imagine that...
Here are two other suggestions for your plc web browser needs:
1. Intellution has a really cool web server module that basically takes any windows that you have created in Intellution and it will automatically convert them to web pages that can be viewed from anywhere. This is especially...
A good link to check out on Active X dll's for VB 6 would be this one:
http://www.insourcess.com/store/docs/41232123.pdf
This company created an ocx which is the pipeline between the ab plc and your vb6 software. Just a little bit of research on the topic of active x controls and ocx files...