Mitsubishi Q series Help

My boss ask me to write Q02J driver on PC. I connect pc and its CPU port. But there is a problem when I initialize the PLC. It seems it is password protected.

When I send "00 10 02 FF FF FC 02 10 03" to PLC and then it responses "00 10 02 FF FF FC 0F 50 02 10 03 00 10 02 00 34 02 78 F9 DC 40 59 6F 7A 53 10 03"

I tried many times but find no algorithm. Does anybody know about that?

Mitsubishi have never released their CPU port protocol to the public domain so you will not be able to talk directly to it without a piece of software called MX Components

http://www.mitsubishi-automation.com/products/software_mx_components_content.htm

well, at least it will not be easy...