Rockwell-automation 2707-NP DTAM Programming Software Manual do Utilizador descarregar pdf (Página 111)

Chapter 14

Entering DTAM Configuration Data

14–5

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.

➀

➁

Controller writes screen number to assigned Read Register.

➂

DTAM reads advisor read register and

displays corresponding screen (if valid).

Controller monitoring ACK bit clears

ACK/NAK bits for next screen number.

DTAM writes Advisor write register

ACK bit indicating that the screen dis-

play was changed. Or writes NAK bit

if an invalid screen was read

➃

If the controller sends an invalid screen number (not a programmed screen)

the DTAM 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.

1 2 ... 106 107 108 109 110 111 112 113 114 115 116 ... 183 184

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Rockwell-automation 2707-NP DTAM Programming Software Manual do Utilizador Página 111