Intermec EasyCoder 4420 User Manual page 128

EasyCoder 4420/4440 Bar Code Label Printer User's Manual
RS-232, RS-422, and RS-485 Serial Interface Pin Assignments
Interface Pin No.
RS-232/422/485 1
RS-232 2
RS-232 3
RS-232/422/485 4
RS-232/422/485 5
RS-232/422/485 7
RS-232/422/485 11
RS-422/485 13
RS-422/485 14
RS-422/485 16
RS-422/485 19
RS-232/422/485 20
C-10
Name Operation
Chassis Ground Connect to pin 1, chassis ground, of connected device.
(GND)
Transmit Data Output: Connect to receive data pin of connected device.
(TD)
Receive Data Input: Connect to transmit data pin of connected device.
(RD)
Request to Send Output: When you use a modem, connect to modem RTS pin.
(RTS) The connection sets RTS to true before transmission. The
printer sets RTS to false after transmission.
Clear to Send Input: When you use a modem, connect to modem CTS pin.
(CTS) Modem must set CTS true before the printer transmits data. If
not connected, CTS sets itself true.
Signal Ground To enable communications, connect to signal ground of
(SG) connected device. Completes circuit for all RS-232 signals.
Printer Status (PS) Output: When not using software flow control (XON/XOFF),
connect to input of connected device (for example, CTS).
Indicates printer mechanical status and status of printer input
buffer.
Input B Input: Serial differential data to the printer.
Output A Output: Serial differential data from the printer.
Input A Input: Serial differential data to the printer.
Output B Output: Serial differential data from the printer.
Data Terminal Output: When you use a modem, connect to modem DTR pin.
Ready (DTR)
When using Intermec Standard protocol, this pin indicates that
the printer is switched on.
When using XON/XOFF or hardware flow control, this pin
indicates the printer mechanical status and the status of the
printer input buffer.