Printronix MVP Series user manual Underline Methods 1, Method 1 On/Off

Underline — Methods 1 & 2

The printer will automatically generate the underline as required by the particular character line transmitted. Leading and trailing spaces are not underlined. Use the following guidelines and see Figure 7–6:

•Underlines start and stop on the normal character boundary and are permissible at 6 or 8 lpi.

•The ESC sequences can be repeated multiple times within a line and can, by themselves, constitute a printable line comprised of only underlines (assuming configuration 28.1 is set).

•Spaces will be underlined as normal printable character, if they are preceded by an ESC – 1 sequence. Any incorrect sequence will be ignored.

•The Underline mode set by ESC – n is not cleared by performing a print or paper movement, but stays in effect until the ESC–0 sequence is received or the printer is powered off.

Method 1 (On/Off)

On

Underlines are turned on by the control sequence ESC – 1 (or hex string 1B, 2D, 01) where the character 1 in the ESC sequence is the second character (SOH) in the ASCII character chart (see Appendix A).

NOTE: Hex 31 can replace hex 01.

Off

Underlines are turned off by the control sequence ESC – 0 (or hex string 1B, 2D, 00) where the character 0 in the ESC sequence is the first character (NUL) in the ASCII character chart (see Appendix A).

NOTE: Hex 30 can replace hex 01.

Programming 7–41