Serial Interface - Intermec EasyCoder 3400e User Manual

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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
EasyCoder 3400e Bar Code Label Printer User's Manual
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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 next table.
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 next table.
Name
Chassis Ground (GND)
Transmit Data (TD)
Receive Data (RD)
Request to Send (RTS)
Clear to Send (CTS)
Signal Ground (SG)
Printer Status (PS)
Input B
Output A
Input A
Output B
Data Terminal Ready
(DTR)
Appendix C— Communications Reference
Operation
Connect to pin 1, chassis ground, of connected device.
Output: Connect to receive data pin of connected device.
Input: Connect to transmit data pin of connected device.
Output: When you use a modem, connect to modem RTS
pin. The modem sets RTS to true before transmission. The
printer sets RTS to false after transmission.
Input: When you use a modem, connect to modem CTS
pin. The modem must set CTS true before the printer
transmits data. If not connected, CTS sets itself true.
To enable communications, connect to signal ground of
connected device. Completes circuit for all RS-232 signals.
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: Serial differential data to the printer.
Output: Serial differential data from the printer.
Input: Serial differential data to the printer.
Output: Serial differential data from the printer.
Output: When you use a modem, connect to modem 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.
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