Remote-processing BASIC for the CX-10 Modbus Manuale Utente Scaricare il pdf (Pagina 43)

BASIC PROGRAMMING GUIDE

2-34

NULL

Syntax: NULL

integer

Where:

integer

= 0 -255

Function: Sets number of NULL characters output to user after a carriage return

Mode: Command

Use: NULL 100

DESCRIPTION

The NULL command controls how many NULL characters (00H) are output following a carriage return.

After a reset, NULL = 0. Because this is a command mode command, it cannot be used as part of a program.

The NULL count is stored at external data memory location 15H. Change the value of NULL in a program

using the DBY(21)=

expr

instruction, where

expr

is any value between 0 and 255. No error is returned if it is

greater than 255.

NULL is generally needed only if you have a slow printer connected to the serial printer port. Note that

NULL affects all serial ports.

Some terminal programs will advance the cursor when a null character is received. This may result in an

strange looking display.

LIST, PRINT

ERROR

BAD SYNTAX When

integer

is negative.

1 2 ... 38 39 40 41 42 43 44 45 46 47 48 ... 83 84

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Remote-processing BASIC for the CX-10 Modbus Manuale Utente Pagina 43