Rockwell Automation 2707-NP2 MICROVIEW SOFTWARE PROGRAMMING MANUAL - Manual (Page 83)

Publication 2707-PM002B-EN-P
Entering MicroView Configuration Data 12-5
Advisor Operation The following shows how the Advisor function operates. The
controller program must reset the ACK and NAK bits after writing a
screen number.
If the controller sends an invalid screen number (not a programmed
screen) the MicroView writes the write register NAK bit (always next
sequential bit following ACK bit). The NAK bit indicates to the
controller that the screen number is incorrect. The master security
code is used by an operator to access and/or change the security
codes of the security screens.
1. MicroLogix Controller writes screen number to assigned Read Register.
2. MicroView reads Advisor Read
Register and displays corresponding
screen (if valid).
4. Controller monitoring ACK bit
clears ACK/NAK bits for next screen
number.
3. MicroView writes Advisor Write
Register ACK bit indicating that the
screen display was changed. Or wrties
NAK bit if an invalid screen was read.