Hitachi CP-X2510Z User's Manual And Operating Manual page 100

RS-232C Communication
9).
table (
Connection
1.
2.
3.
on.
8
CONTROL
RS-232C
RS-232C Cable
(cross)
RTS (7)
RI (9)
CONTROL
CONTROL
1 2 3 4 5
6 7 8
9
(7) RTS
(9)