32 Line Matrix Printer Code V Programmer's Reference Manual

Free Format Enable, Non-Graphics

Purpose Permits the Code V to override host-generated paper motion

commands when

not

in Graphics Mode.

Mode Normal

Format (cc) PF (cc)-

(cc) Represents the Special Function Control Code

(SFCC). Enter the specific SFCC for your Code V

configuration.

PF Specifies the Enable Non-Graphics Free Format

command; enter PF.

(cc)- Terminator. Enter the SFCC for your Code V

configuration immediately followed by - (Graphics

Mode CR) or other valid terminator.

Comments Use the PF command with host systems that send blocks of data

padded with NULs or other control characters that may interfere

with a graphics sequence (such as unformatted LU 3 mode,

coaxial environments). When the Graphics Mode Disable

command (^PN^-) is used to exit the Graphics Mode, it also

automatically terminates the Free Format command and disables

the Ignore Data commands. This can result in unwanted paper

motion if Graphics Mode is exited between forms or labels, since

host-generated line feeds, form feeds, etc., are no longer ignored

by the firmware. Refer to the Free Format (page 83) and Ignore

Data (page 89) commands for more information on these

functions.

The PF command must be issued

before

the Graphics Mode

Enable command (PY). Host-generated line terminators are then

ignored by the Code V and only the following standard graphics

format control commands are recognized:

(cc) *Line Feed (hex 0A)

(cc), Form Feed (hex 0C)

(cc)- Carriage Return (hex 0D)

NOTE: When the Code V is in the Graphics Mode, the Enable Non-Graphics

Free Format command has no effect on the host data stream. In the

Graphics Mode, use the Free Format (page 83) and Ignore Data

(page 89) commands to ignore unwanted data.