NCR RealScan 7872 Installation/Owner Guide
497-0415291 Release F
08/04
33 of 44
Setting the Communication
Protocol
Setting the communication protocol requires both a hardware change and a software
change. Hardware changes are made to strapping on the system board inside the
RealScan 7872. Software changes are performed using the programming tags.
To change the communications protocol strapping, refer to
RealScan 7872 Repair Guide
(B005-0000-1180).
Determine the communications protocol with the following procedure.
1.
Apply power to the RealScan 7872.
2.
Scan the
Diagnostic Mode
tag; must be the first tag scanned after applying power.
Scan the
Hex 3
tag. The good read tone for this tag sounds (three beeps).
If the Voice feature enabled, the communications protocol is given audibly. If Voice
is not enabled, the Status indicator flashes green and the tone beeps a specific
number of times to identify the communication protocol.
1 Short, high-pitched beep
OCIA NCR Short
1 Beep
OCIA NCR Long
2 Beeps
OCIA Non-NCR Dual Cable
3 Beeps
IBM 468x/9x Port 4A
4 Beeps
IBM HHBCR
6 Beeps
RS-232
7 Beeps
OCIA Single-Cable
8 Beeps
OCIA Dual-Cable
11 Beeps
Casio 4-Bit Parallel Dual Cable
12 Beeps
IBM 1520 (BCR)
13 Beeps
TEC 4-Bit Parallel Dual Cable
3.
Remove power from the RealScan 7872.
If communications cannot be established after verifying the communications
protocol programming, and all cable connections, refer to the
RealScan 7872 Repair
Guide
(B005-0000-1180) or your NCR representative.
