NCR 74 OFX (7874), User Manual

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3-36 Chapter 3: Installation
Special Host Terminal Connections
Scanner Connected to IBM Terminals
The scanner and scanner interface to any IBM system is basically Plug ‐ and ‐ Play,
assuming the RealScan unit is programmed for IBM Communications (Refer to the
“Programming Worksheets” section on Chapter 5 for more information). These
systems are always single ‐ cable, that is, one cable carries traffic for the scanner. There
are no configurable parameters in the IBM interface—the protocol is standardized and
without any flexibility as far as bar code data formatting or interface characteristics
such as baud rate.
The terminal port into which the RealScan unit is plugged varies with the type of
terminal.
The older 468x series of terminals require the RealScan unit to be plugged into port 17.
Newer IBM terminals no longer have this port; instead they use cable 1416 ‐ C070 ‐ 0040
to plug into port 9x (the “x” varies depending on the terminal model).
SNI Beetle Host Terminal
For the RealScan 74 to communicate with an SNI Beetle Host Terminal, the
communication parameters must be properly set. Scanning the following sequence of
programming tags enables a typical installation; however, some variations may be
necessary for any specific installation.
The following programming tags must be the first ones scanned after applying power
to the RealScan 74.
1. Program Mode —enables programming mode
2. Hex 3, Hex 4, Hex F, Hex 0, Hex 0 —chooses Wincor ‐ Nixdorf Beetle parameters
3. Save and Reset —save Beetle parameters
4. Default —permanently store Beetle parameters as the default settings
The following settings get changed:
RS232 Communication
9600 Baud, 8 ‐ bit, Odd Parity, 1 Stop, Raise RTS – Wait for CTS
Scanner Only Protocol
Terminator = 0Dh
One Tag Output Buffer enabled (buffers only one tag)