Relative Line Slewing
Another method of moving paper using the PI line results in vertical slews of a specified numF ber of lines within the form relative to the current print line (rather than slewing to a specific line). For this to occur, three criteria must be met:
1.PI line must be set high;
2.Data bit 5 must be 1 (set); and
3.The NVFU must be the selected Vertical Format Unit.
The Slew Relative configuration and the status of data bits
If the Double High for One Line attribute is active, n + 1 lines will be slewed rather than n lines.
Table
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PI Line | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 |
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1 | X | 0 | 0 | 1 | 0 | 0 | 0 | 0 | Perform a CR function * |
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1 | X | n6 | n5 | 1 | n4 | n3 | n2 | n1 | Slew 1 - 63 lines |
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X = don't care (1 or 0)
n1 - n6 = decoded for 1 to 63 line movement
*treated as CR = CR; refer to the Carriage Return control code on page
CVFU
The CVFU may be selected in
Start Load Code - 1D Hex
The start load code clears and initializes the CVFU memory for the memory load program. The start load code is 1D hex. Subsequent data received after the start load code are interpreted as line identification codes until the end load code is received.
Channel Assignment
Following the start load code, all data bytes received are interpreted as channel assignment data until the end load code is received.
Vertical Format Units |
