
Appendix J
|
|
|
|
|
|
|
|
|
|
| Table | 7 | (Cont’d) |
|
|
|
|
|
|
|
|
|
|
|
Signal |
| Return |
| Signal |
| Direction |
|
|
|
| Description |
|
|
|
| |||||||||
|
|
|
|
|
|
|
|
|
|
| ||||||||||||||
Pin No. |
| Pin No. |
|
|
|
|
|
|
|
|
|
| ||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| ||
12 |
| 30 |
|
|
| PE |
| OUT |
| Always | GND | Level . |
|
|
|
|
|
|
| |||||
13 |
| - |
|
| SLCT |
| OUT |
| P u l l e d | u p | t o + 5 V v i a | 3 . 3 κ Ω | r e s i s t o r . |
| ||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |||||||||
14 |
| - |
|
| AUTO |
|
|
|
| I n |
| W i t h t h i s | s i g n a l b e i n g |
| a t " L O W " | l e v e l , t h e | ||||||||
|
| FEED X |
|
|
| |||||||||||||||||||
|
|
|
|
|
|
| p a p e r | i s a u t o m a t i c a l l y |
| f e d | o n e | l i n e a f t e r |
| |||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
| p r i n t i n g . |
|
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
| (The signal | level can | be | fixed | to | "LOW" |
| |||||
|
|
|
|
|
|
|
|
|
|
|
|
| w i t h A U T O p r o v i d e d o n t h e |
| ||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
| control circuit board . ) |
|
|
|
|
|
|
| ||||
15 |
| - |
|
|
| N C |
|
|
| Not used. |
|
|
|
|
|
|
|
|
| |||||
16 |
| - |
|
|
| OV |
|
|
| Logic | GND | level. |
|
|
|
|
|
|
| |||||
17 |
| - | C H A S S I S - |
| G N D |
| P r i n t e r c h a s s i s G N D . |
|
|
|
|
|
|
| ||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
| In the | printer, the chassis | GND | and the |
| |||||||
|
|
|
|
|
|
|
|
|
|
|
|
| l o g i c G N D a r e i s o l a t e d f r o m e a c h o t h e r . |
| ||||||||||
18 |
| - |
|
| +5V |
| - |
| + 5 V |
|
|
|
|
|
|
|
|
|
|
| ||||
19 to 30 |
| - |
|
|
| GND |
| - |
| TWISTED - PAIR RETURN signal | GND level . | |||||||||||||
31 |
| - |
|
|
|
|
|
| In |
|
|
|
|
|
| |||||||||
|
|
| INIT |
|
| W h e n | t h e | l e v e l o f t h i s | s i g n a l b e c o m e s |
| ||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
| "LOW", the printer controller is reset to its | |||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
| initial | state and the print buffer is cleared . | ||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
| This signal | is normally | at | "HIGH" | level . |
| ||||||
|
|
|
|
|
|
|
|
|
|
|
|
| a n d i t s p u l s e w i d t h m u s t b e m o r e t h a n |
| ||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
| 50µs at | the | receiving |
| terminal . |
|
|
| ||||
3 2 |
|
|
| ERROR |
| Out |
| A l w a y s | " H I G H " l e v e l | P u l l e d | u p | t o + 5 V | v i a | |||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
| 3 . 3 κ Ω r e s i s t o r . |
|
|
|
|
|
|
| ||||
3 3 |
| - |
|
|
| GND |
| - |
| S a m e | a s | w i t h P i n N o s . | 1 9 t o | 3 0 . |
|
| ||||||||
3 4 |
| - |
| RESET |
| Out |
| R e s e t | s i g n a l g e n e r a t e d | w h e n | t h e | P r i n t e r | i s | |||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
| p o w e r e d , o r | w h e n t h e I N I T s i g n a l i s |
| |||||||||
|
|
|
|
|
|
|
|
|
|
|
|
| a p p l i e d t o t h e P r i n t e r . |
|
|
|
|
|
| |||||
3 5 |
|
|
|
|
|
|
|
|
|
|
|
| P u l l e d u p t o + 5 V v i a 3 . 3 κ Ω r e s i s t o r . |
| ||||||||||
3 6 |
| - |
|
|
| NC |
| - |
| Not used. |
|
|
|
|
|
|
|
|
| |||||
|
|
|
|
|
|
|
|
|
|
|
| |||||||||||||
NOTES: 1. “Direction” refers | to the | direction of signal flow as viewed from the | ||||||||||||||||||||||
|
| printer |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2.“Return” denotes “TWISTED PAIR RETURN” and is to be connected at signal ground level
As to the wiring for the Interface. be sure to use a
3 All interface conditions are based on TTL level. Both the rise and fall times of each signal must be less than 0.2µs.
4.Data transfer must not be carried out by ignoring the ACKNLG or BUSY signal. (Data transfer to this printer can be carried out only after con- firming the ACKNLG signal or when the level of the BUSY srgnal IS “LOW”.)
102