Citizen CLP-621 - Operation Panel and LED Functions

(5) Other circuits..............................................................................................2-32
(5-1) +3.3V/+1.5V circuit .......................................................................2-32
(5-2) Reset circuit ..................................................................................2-33
(5-3) Clock circuit ..................................................................................2-33
(5-4) Ope-pane circuit............................................................................2-34
(5-5) USB I/F control circuit ...................................................................2-34
2-3. Operation Panel ..............................................................................................................2-35
2-3-1. External view ......................................................................................................2-35
(1) Keys...........................................................................................................2-35
(2) LEDs ..........................................................................................................2-35
2-3-2. Operation using the keys....................................................................................2-36
(1) Normal operation .......................................................................................2-36
(1-1) Sensor adjustment mode..............................................................2-36
(1-2) Menu setting mode .......................................................................2-37
(2) Test mode ..................................................................................................2-38
(2-1) Self print mode..............................................................................2-38
(2-2) Hex dump mode ...........................................................................2-39
(3) Factory/Service mode................................................................................2-39
(3-1) General .........................................................................................2-39
(3-2) How to enter the Factory/Service Mode........................................2-40
(3-3) Factory/Service Mode menu table ................................................2-44
2-4. Interface..........................................................................................................................2-49
2-4-1. Serial Interface ...................................................................................................2-49
(1) Specifications.............................................................................................2-49
(2) Signal line and pin assignment ..................................................................2-49
(3) Protocol......................................................................................................2-50
2-4-2. Parallel Interface ................................................................................................2-51
(1) Specifications.............................................................................................2-51
(2) Signal line and pin assignment ..................................................................2-51
(3) Parallel port status signals when an error occurs ......................................2-52
(4) Compatible timing specification .................................................................2-52
2-4-3. USB Interface .....................................................................................................2-54
(1) Specifications.............................................................................................2-54
(2) Signal line and pin arrangement ................................................................2-54
2-5. Power Supply..................................................................................................................2-55
2-5-1. Block diagram.....................................................................................................2-55
2-5-2. Block A (Noise filter circuit and rush current preventing circuit)..........................2-58
2-5-3. Block B (Current smoothing circuit) ....................................................................2-58
2-5-4. Block C (Converter and driver circuit) ................................................................2-58
(1) Converter circuit.........................................................................................2-58
(2) Driver circuit...............................................................................................2-59
2-5-5. Block D (Output circuit) ......................................................................................2-60
2-5-6. Block E (Control circuit)......................................................................................2-60
2-3
CLP-621 & CLP-631