Rockwell-automation 1771-DB Basic Module User Manual - Series A Manual de usuario descargar pdf (Pagina 51)

Operating Functions

Chapter 5

5–14

Action taken: You can use the PROG1 command to program the

resident EPROM with baud rate information. When the module is

“powered-up” the module reads this information and initializes the

program port with the stored baud rate. The “sign-on” message is sent to

the console immediately after the module completes its reset

sequence. If the baud rate on the console device is changed you must

program a new EPROM to make the module compatible with the new

console.

If you have already used a PROG2 command, you cannot use the

PROG 1 command.

Action taken: The PROG2 command functions the same as the

PROG1 command except for the following. Instead of “signing-on” and

entering the command mode, the module immediately begins executing

the first program stored in the resident EPROM, if no program is stored

in RAM. Otherwise it executes the RAM program. You can use the

PROG2 command to RUN a program on power-up without connecting to

a console. Saving PROG2 information is the same as typing a ROM 1,

RUN command sequence. This feature also allows you to write a special

initialization sequence in BASIC and generate a custom “sign-on”

message for specific applications.

If you have already used a PROG1 command, you cannot use the

PROG 2 command.

5.3.14

Command: PROG1

5.3.15

Command: PROG2

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Rockwell-automation 1771-DB Basic Module User Manual - Series A Manual de usuario Pagina 51