What Is The Cable Wiring For Connecting A Printer And A Host Pc With A Serial Interface - Epson H6000III - TM Two-color Thermal Line Technical Reference Manual

• If the Customer Display is connected to the Customer Display connector of the UB-S09,
confirm that the settings of the jumper switch on the UB-S09 are correctly set.
JP 1
Customer Display connection
settings
Note:
Do not set JP1 open (without jumper). If you short pins other than 1 and 2 or 2 and 3 of JP1, the UB-S09
will not operate correctly.
C.1.4 What is the cable wiring for connecting a printer and a host PC
The diagrams below show the pin numbers and pin assignments for the interface connectors,
but only the pin assignments without numbers for the PC side because serial interface pin
assignments of different PCs are different.
Note:
This type of connection is frequently called a "null modem cable."
❏ 9 pin (PC) - 25 pin (Interface)
FG
TXD
RXD
CTS
DTR
SG
DSR
Reset signal
C-2 FAQ
1-2 shorted
Customer Display connected
2
3
1 FG
2 TXD
3 RXD
4 RTS
6 DSR
7 SG
20 DTR
(*1) The signal can be used as a reset signal for the
25 INIT(*1)
printer by setting a DIP switch of the printer.
Customer Display not connected
1
with a serial interface?
2-3 shorted
1
2
3
Rev. E