Printronix MVP Series User Manual page 188

Option 75 — Clear to Send (CTS) and Carrier Detect (CD)
Two interface lines normally ignored by the printer. When a modem is used,
they are configured to avoid being ignored. CTS (pin 5) informs the printer
that the host computer is ready to receive data. CD (pin 8) allows the printer
to send data.
Option
Number
.0
.1
8–20
Display Configuration
Description
Disable (default).
75.0
Enable – (CTS must be ON for data transmission from the printer
75.1
and CD must be ON for printer to receive data.
Interfaces