Rockwell-automation 1747-PBASE BASIC Development Software Programming Manual do Utilizador descarregar pdf (Página 128)

Publication 1746-PM001A-US-P

A-6 BASIC Macro Library

Battery Back-Up

The following table describes the macro CALLs used to control the battery

back-up.

Program Control

The following table describes the macro CALLs used for program control.

Table A.5 Battery Back-up Macros

Battery Back–up

Macro CALLs

Macro Inputs Outputs

battery_on() Enables battery back-up. None None

battery_off() Disables battery back-up. None None

alloc_bat_var(%1) Allocates battery backed memory for non-volatile data

storage. One parameter is required. %1 is the number of

variables to be stored. If the MTOP is not 5FFFh, then this

function is skipped.

%1 = Number

variables

None

read_bat_var(%1,%2) Retrieves battery backed variables. %2 = storage number %1 = variable to

be retrieved

write_bat_var(%1,%2) Writes battery backed variables. %2 = storage number %1 = variable to

be written

Table A.6 Program Macros

Program Control

Macro CALLs

Macro Inputs Outputs

CALL_ram() Transfers control of the BASIC program to the second line of the

program in RAM.

None None

CALL_rom(%1) Transfers control of the BASIC program to the second line of the

program specified in EEPROM.

%1 = number of ROM

program

None

ret() Transfers control back to were it was in the main program prior to the

CALL.

None None

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