Serial NO : S01401001-EN
Date of Editing : 2012-09-24
Questions : How to Use Protocol to Read& Write 721H&727H Master Code via CommView?
Problem Solving :
Firstly, please refer 721H/727H Protocol Document about 12H Read EEROM /20H Write EEROM/ Memory Layout . Learn Protocol Format and Know Master code storage location in EEROM that is stored at start location 00 0E with 4 bytes length, then open “CommView” to read/write master code
Read Current Master Code:
Step1: Select Com Port
Step2: Input Node ID
Step3:
Format (refer protocol 12H Read EEROM format)
Example:
12: Command Read EEROM format
000E: start memory location for master code
04: need send 4 bytes length
Step4: Send command
The result Echo that current master code is 123456
Write New Master Code:
Step1: Select Com Port
Step2: Input Node ID
Step3:
Format (refer protocol 20H Write EEROM format)
Example:
20: Command 20H Write EEROM
000E: start memory location for master code
04: need send 4 bytes length
00 01 E2 40 (write 123456 to EEROM)
Step4: Send comman
