User`s guide

Socket-A Socket-B
TXD 2 -> 3 RXD
RXD 3 <- 2 TXD
RTS 4 -> 5 CTS
CTS 5 <- 4 RTS
DSR & DCD 6&8 <- 20 DTR
GND 7 -- 7 GND
DTR 20 -> 6&8 DSR & DCD
The two cables (plus gender/9-pin adapters as needed) give you the
connection described in the IW-II manual.
A CrossWorks cable (plus adapters as needed) is supposed to work, too.
Either the homebrew cable or one of the combinations of existing cables
mentioned should allow a hardware handshaking connection at 9600 baud.
For the C-Itoh 8510 printer, go to "Properties" (in the Files menu). For
Port settings, select the correct COM port. Data bits, parity, stop bits should
be the usual 8-N-1. Speed or baud rate should be 9600. Flow control should be
Hardware. On your IW-II, DIP switch 2-3 should be Up (open).
Yet another alternative is to use a IIgs or Mac high-speed modem cable
(e.g. part 950-0109) connected to a NULL modem plus adapters as needed. This
works fine; but, you will lose the hardware control lines and need to switch to
Xon/Xoff handshaking. In "Properties", Flow control should be Xon/Xoff. On your
IW-II, DIP switch 2-3 should be Down (closed).