Printronix ANSI Printer manual Using The Evfu, Series Evfu Codes PI Line Enabled

Using The EVFU

Channel codes in excess of 192 channels received prior to the end load code are discarded.

Using The EVFU

Once the EVFU program has been enabled and loaded, sending the appropriate channel code to the printer will cause any data in the buffer to print and will position the paper to the next line on the form having the specified channel number assigned in EVFU memory.

For a data byte to be recognized as an EVFU instruction, the following criteria must be met:

1.PI line must be enabled and set high; and

2.Data bit 5 must be 0 (not set).

3.Data bits 6-8 must be 0 (not set).

or:

1.PI line must be disabled or low; and

2.Data bit 5 must be 1 (set).

Given these conditions, the lower four bits of a byte will specify the EVFU channel number. Table 19 lists the EVFU channels and their equivalent data bytes with the PI line enabled; Table 20 lists the EVFU channel and their equivalent data bytes with the PI line disabled.

Table 19. P-Series EVFU Codes - PI Line Enabled

	ASCII						Data Bits
Hex	Dec.	Code	PI	8	7	6	5	4	3	2	1	Channel
00	0	NUL	1	X	X	X	0	0	0	0	0	1 (TOF)
01	1	SOH	1	X	X	X	0	0	0	0	1	2
02	2	STX	1	X	X	X	0	0	0	1	0	3
03	3	ETX	1	X	X	X	0	0	0	1	1	4
04	4	EOT	1	X	X	X	0	0	1	0	0	5
05	5	ENQ	1	X	X	X	0	0	1	0	1	6
06	6	ACK	1	X	X	X	0	0	1	1	0	7
07	7	BEL	1	X	X	X	0	0	1	1	1	8
08	8	BS	1	X	X	X	0	1	0	0	0	9
09	9	HT	1	X	X	X	0	1	0	0	1	10
0A	10	LF	1	X	X	X	0	1	0	1	0	11
0B	11	VT	1	X	X	X	0	1	0	1	1	12 (VT)

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