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1
9
3
RS-422 RS-422
18
10
RDA
PG
PG
RDA
SDASDA
SDB SDB
RDB
RDB
Appendix A System Interface Description
A-7
1.2.3 Serial Interface with RS-422 (only CI - 4040)
This interface typ requires the signal lines.
S Pin 1 Protective Ground (PG)
S 3 Receive Data (RDA)
S 9 Send Data (SDA)
S 10 Not Send Data (SDB)
S 18 Not Receive Data (RDB)
Standard Connection
Note: Protective ground (PG) connected either to host or printer