Rockwell-automation 2707-NP2 MICROVIEW SOFTWARE PROGRAMMING MANUAL Manual do Utilizador descarregar pdf (Página 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

screen (if valid).

4. Controller monitoring ACK bit

clears ACK/NAK bits for next screen

number.

3. MicroView writes Advisor Write

screen display was changed. Or wrties

NAK bit if an invalid screen was read.

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Rockwell-automation 2707-NP2 MICROVIEW SOFTWARE PROGRAMMING MANUAL Manual do Utilizador Página 83