Interfacing – Panasonic KX-P2023 User Manual
Page 65
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Interfacing
SG...SIGNAL GROUND
• The twisted pair return wires (pins 19-30) are connected to signal ground.
FG...FRAME GROUND
• Frame ground is the same as chassis ground.
+5V
• This is for evaluation only. It should not be used to supply power for external equipment.
PRIME
• This input signal is normally high and goes low to reset the printer. It can be received anytime during
printer operation.
ERROR
• This output signal is normally high, and goes low when an error occurs. An error condition can be
caused by:
1. a “Paper Out” condition
2. the printer is OFF LINE
3. an overload condition exists
Timing Chart (When normal printing code is received)
T1...0.5 ps (Min)
T2...1|iS (Min)
T3...0.5 ps (Men)
T4...5 ps (Max)
T5...1 ms or less when buffer is not full
1 s or less when buffer is full
Timing Diagram
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