Rockwell-automation 1771-DB Basic Module User Manual - Series A Manual de usuario descargar pdf (Pagina 49)

Operating Functions

Chapter 5

5–12

Action taken: The XFER (transfer) command transfers the current

selected program in EPROM to RAM and then selects the RAM

mode. If you type XFER while the BASIC Module is in the RAM

mode, the program stored in RAM is transferred back into RAM

and the RAM mode is selected. After the XFER command

executes, you can edit the program in the same way you edit any RAM

program.

Important: The XFER command clears existing RAM programs.

Important: Before you attempt to program a PROM, read the PROG,

PROG1 and PROG2 sections of this chapter. Some PROG options

exclude the use of others.

Action taken: The PROG command programs the resident EPROM

with the current program. The current selected program may reside in

either RAM or EPROM. See Section 3.4, titled “Installing the User

Prom”, for additional information concerning EPROM’s.

Important: Be sure you have selected the program you want to save

before using the PROG command. Your module does not automatically

copy the RAM program to ROM. You must also disable interrupts prior

to the PROG, PROG1 or PROG2 commands using CALL 8 and

enable interrupts after the PROM is burned using CALL 9. If an

error occurs during EPROM programming, the message ERROR

PROGRAMMING is displayed. When this error occurs:

previously stored programs may or may not be accessible.

you cannot store additional programs on this PROM.

After you type PROG(cr), the BASIC Module displays the number in

the EPROM FILE the program occupies. Programming can take

up to 12 minutes to complete depending on the length of the program

(51 seconds per K bytes of program).

5.3.12

Command: XFER

5.3.13

Command: PROG

1 2 ... 44 45 46 47 48 49 50 51 52 53 54 ... 166 167

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Rockwell-automation 1771-DB Basic Module User Manual - Series A Manual de usuario Pagina 49