Oki 6E - Manual (Page 180)

B - 1
Appendix B LOCALTALK (RS422) SERIAL INTERFACE
1) Connector
• Printer side : 8-pin mini DIN receptacle
Type TCS7187-01-201 (made by HOSHIDEN) or equivalent
• Cable side : 8-pin mini DIN plug
Type TCP7180-01-110 (made by HOSHIDEN) or equivalent
2) Cable
• To be shielded cable
• Cable length
LocalTalk
Defined max. length : 1,000 ft. (305 m) (It is the maximum length for a
LocalTalk network.)
Recommended max. length : 10 ft. (3 m) (For noise prevention)
RS422 : 6 ft. (1.8 m) max.
3) Interface signal
Pin No.
1
2
3
4
5
6
7
8
Signal Name
–
Sync. signal
Transmit data minus
Signal ground
Receive data minus
Transmit data plus
–
Receive data plus
Abfreviation
SYNC
TxD-
SG
RxD-
TxD+
RxD+
Signal Direction
←
PR
←
PR
→
PR
←
PR
→
PR
Description
(Not used)
(Not used)
Transmit data minus polarity
Signal ground
Receive data minus polarity
Transmit data plus polarity
(Not used)
Receive data plus polarity