Chapter 2 Operating Principles
2-4. Interface
2-55 CL-S700/CL-S703/CL-S700R
(3) Parallel port status signals when an error occurs
The following table shows the status signal change when an error occurs.
Error Compatible mode
Paper end Busy:
PError:
Select:
Fault:
L → H
L
→ H
H
→ L
H
→ L
Error other than paper end
• Head open
• Other
Busy:
PError:
Select:
Fault:
L → H
L
→ unchanged
H
→ L
H
→ L
Conditions for Busy • Receive buffer full
• Data being read
• Error
(4) Compatible timing specification
[When power is on] (Timing to go on-line)
BUSY
SELECT
Power On
ACK
Reset