Relations among the ON LINE switch, SLCT IN signal, DC l/DC 3 code and interface signals are shown in Table 9 below.

Table 9 DC 1/DC 3 and Data Entry

NOTES: 1. In Table 9, it is assumed that as soon as the Printer receives data. it sends back the ACKNLG signal, though this data is not stored in the print buffer. In this status, the Printer is waiting for the DC 1 code for normal entry.

2.The DC l/DC 3 code is valid under the condition that the DIP switch pin l-8 is OFF, namely, the level of SLCT IN at the pin No. 36 of the interface connector is “HIGH.” When SLCT IN is “LOW,” the DC l/DC 3 code is not valid.

(14)NUL (Null)

The NUL code is regarded as the termination for tabulation setting sequence (described in detail later).

(15) BEL(Bell)

When the BEL code is input, the buzzer sounds for about 3 seconds.

(16)Escape (ESC) control

(a)Escape numerical control

Input of an “ESC” codefollowed by an ASCII numeric code permits each of the following functions to be performed.

1)ESC 0(Escape 0)

Receipt of an “ESC” followed by ASCII code “0” causes the line spacing to be set at 1/8 inch. Input of the ESC 2 code ormsignal to the interface connector or turning the power off and on again causes the line spacing to return to 1/6 inch.

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