Rockwell Automation 1771-DB BASIC MODULE - Manual (Page 292)

Chapter
Call Routines 69–127 13
13 -34
Use CALL 98 to disable the Data Terminal Ready (DTR) signal from
PRT2. CALL 97 re-enables the DTR signal.
Input and Output Arguments
This routine has no input and no output arguments.
Syntax
CALL 98
Example
>1 REM EXAMPLE PROGRAM
>10 CALL 98 : REM DISABLE DTR SIGNAL
>30 END
Use CALL 99 to reset the internal print head character counter of your
printer when printing out wide forms. This call prevents the automatic
CR/LF at character 79. You must keep track of the characters in each line.
Input and Output Arguments
This routine has no input and no output arguments.
Syntax
CALL 99
Example
>10 REM EXAMPLE PROGRAM
>20 REM THIS PRINTS TIME BEYOND 80TH COLUMN
>30 PRINT TAB(79)
>40 CALL 99
>50 PRINT TAB(41), “TIME -”,
>60 PRINT H,“:”,M,“:”,S
>70 END
CALL 98: Disable Port PRT2
DTR Signal
CALL 99: Reset Print Head
Pointer