42641101TH Rev.1 91 /
Oki Data CONFIDENTIAL
APPENDIX A RS-232C SERIAL INTERFACE (option)
1) Connector
• Printer side : 25-pin receptacle
Type DB-25S (made by Canon) or equivalent
• Cable side : 25-pin plug
Type DB-25S (made by Canon)
Shell
Type DB-C8-J10-F2-1 (made by Nihon Kouku Denshi) or equivalent
Note:
Plug shall be fixable with a lock screw.
2) Cable
• Cable length : 6 ft (1.8 m) max. (cable shall be shielded)
Note:
Cable is not provided.
3) Interface signal
Pin No. Signal name Abbreviation Signal direction Functions
1 Frame Ground FG Frame Ground
2 Transmitted Data TD PR Transmitted Data
3 Received Data RD PR Received Data
4 Request to Send RTS PR Stay space level
5 - (Not connected)
6 - (Not connected)
18 - (Not connected)
7 Signal Ground SG Signal Ground
9
- (Not connected)
17
19 - (Not connected)
20 Data Terminal Ready DTR PR Data terminal ready
21
25
- (Not connected)
~~
• Connector pin arrangement
When the Ready/Busy protocol is used for the buffer busy control method, the busy signal can be
set to Pin-20 (DTR) in the menu.
13
25
1
(View from the cable side)
14
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