Appendix B: Localtalk (Rs422) Serial Interface (Ol610E/Ps Only) - OKIDATA OL600e Service Manual

APPENDIX B: LOCALTALK (RS422) SERIAL INTERFACE (OL610E/PS ONLY)

1) Connector
• Printer side
• Cable side
2) Cable
• To be shielded cable
• Cable length
LocalTalk
Defined max. length
Recommended max. length : 10 ft. (3 m) (For noise prevention)
RS422 : 6 ft. (1.8 m) max.
3) Interface signal
Pin No. Signal Name
1 –
2 Sync. signal
3 Transmit data minus
4 Signal ground
5 Receive data minus
6 Transmit data plus
7 –
8 Receive data plus
LocalTalk Serial Interface
: 8-pin mini DIN receptacle
Type TCS7187-01-201 (made by HOSHIDEN) or equivalent
: 8-pin mini DIN plug
Type TCP7180-01-110 (made by HOSHIDEN) or equivalent
: 1,000 ft. (305 m)--maximum length for a LocalTalk
network.
Abbreviation Signal Direction
SYNC
TxD-
SG
RxD-
TxD+
RxD+
B - 1
Description
(Not used)
← PR
(Not used)
← PR
Transmit data minus polarity
Signal ground
→ PR
Receive data minus polarity
← PR
Transmit data plus polarity
(Not used)
→ PR
Receive data plus polarity
OL600e/610e/610e-PS/610e-S
Service Manual, P/N 59271602