Serial Interface - Intermec EasyCoder 3400 User Manual

RS-422 Serial Interface
RS-485 Serial Interface
RS-232, RS-422, and RS-485 Serial Interface Pin Assignments
Interface Pin
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
3400, 3440, and 3600 Bar Code Label Printer User's Manual
Use the RS-422 interface in long line point-to-point direct connect
installations. The printer cable must have the pin assignments for an RS-
422 serial interface shown in the table on this page.
Use the RS-485 serial interface for Multi-Drop installations only. The
printer cable must have the pin assignments for an RS-485 serial interface
shown in the table on this page.
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
(RTS) pin. The modem 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) The 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 Output: When not using software flow control
(PS)
(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
Ready (DTR) pin.
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.
Appendix C— Communications Reference
99