Xon/Xoff, No Status; Polling Mode D; Multi-Drop; Host Requirements - Intermec 4630 User Manual

<STX> and <ETX> are optional with XON/XOFF, which lets you use them for
comments or other characters that you want the printer to ignore. If an <ETX>
is downloaded, the printer will ignore all the data between it and the next
<STX>. Once the <STX> is downloaded, the printer starts reading the data
again.

XON/XOFF, No Status

This protocol is identical to XON/XOFF protocol except that status is not
returned after each message received. However, status is still returned for the
status request (<ENQ>) and the status dump (<VT>) commands.

Polling Mode D

Polling Mode D is a block transfer protocol (Intermec proprietary) that
transmits data in blocks of up to 255 characters, including protocol overhead.
The blocks are framed with LRC characters for additional data integrity.
Polling Mode D is normally used for point-to-point networks that connect the
printer to an Intermec port concentrator (RS-232C or RS-422 are acceptable).
This protocol is enabled from the printer.

Multi-Drop

Multi-Drop lets you connect up to 32 devices to an Intermec controller on a
four-wire RS-485 (two twisted pair). This protocol is similar to Polling Mode D
except each device has a unique address (POL and SEL character). You must
use an RS-485, which is automatically enabled when you enable Multi-Drop. Be
sure to specify a unique address for the printer and verify that the baud rate is
between 2,400 and 19,200.

Host Requirements

The 4630 and 4830 printers have the following hardware and software
requirements:
•
The host computer must use the American Standard Code for Information
Exchange (ASCII) for data communications.
•
A serial port must be available on the host (unless I/O options are
installed) if you are connecting it directly to the printer.
•
The host must support at least one of the following data communications
interfaces: EIA RS-232, RS-422, or RS-485.
For information about configuring the host or the controller, refer to the
manual for that device.
Communications Reference
B
B-5