CITIZEN CLP-2001 User Manual

Page 60

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Receive buffer size = 32K bytes

4K bytes

Note:

Even if each code is ready for output, the same code cannot be

transmitted twice successively (except when the power is turned
on or the printer is reset from the controi panei).

Fig. Buffer in use

(2) Ready/Busy system (see figure)

Requirements of DTR “Ready (High)":

• When the printer is "on line."

• When the receive buffer is more than 2K bytes.

However, when the remaining buffer is more than 2K bytes and the
DTR signal is Busy (Low), the printer keeps a "Busy (Low)” level until

the remaining buffer is 4K bytes.

.. .. . .

Requirements of DTR "Busy (Low)":

• When a printer error occurs

• When the printer enters the pause

• When the remaining buffer is less than 2K bytes. '

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