User's Manual

Control Code Definitions
Chapter
—
5
80
6820 Series 80-Column Printer User’s Manual
Clear Vertical Tabs
All vertical tab stops are cleared. It is merely a variant behavior of the Set
Vertical Tabs function, where the NUL acts as an early terminating charac-
ter, since the function normally clears the existing tabs before setting any
new tabs.
Format
Decimal Hex ASCII
27 66 0 1B 42 00 ESC “B” NUL
Set Vertical Tabs in Channel
This function works the same as the Set Vertical Tabs function, except that
it stores the tabs into a specified channel, as specified by the variable c.
This channel is selected for use by the Select Vertical Tab Channel function.
Format
Decimal Hex ASCII
2798cn1n2...nk0 1B 62 c n1 n2 ... nk 00 ESC “b” c n1 n2 ... nk NUL
where c is the channel number (range: 0–7), n1 is the first tab (range of
values for tab stops: 1–255), n2 is the second tab (all tabs must be in
ascending order), ... are subsequent tabs (maximum number of tabs:
16), nk is the last tab to set (any value less than the previous tab value
acts as a terminating character), and NUL is the terminating character.
Clear Vertical Tabs in Channel
All vertical tab stops in the specified channel are cleared. This is merely a
variant behavior of the Set Vertical Tabs in Channel function, where the
NUL acts as an early terminating character, since this function normally
clears the existing tabs b efore setting any new tabs.
Format
Decimal Hex ASCII
27 98 c 0 1B 62 c 00 ESC “b” c NUL
Select Vertical Tab Channel
A specified tab channel is selected. It sets up the current tabs from that
channel. Once this function is performed, all subsequent Perform Vertical
Tab commands use the tab stops from the list retrieved from the specified
channel. At power on, the printer uses the tabs stored in channel 0.
Format
Decimal Hex ASCII
27 47 c 1B 2F c ESC “/” c
where c is the channel number (range: 0–7)