NCR 74 OFX (7874), User Manual

Page: 152 / 268

5-44 Chapter 5: Programming
Stop Bits and Character Length
The Stop Bits and Character Length parameter contains four selections: 1 Stop Bit and
7 ‐ bit Character Length, 1 Stop Bit and 8 ‐ bit Character Length, 2 Stop Bits and 7 ‐ bit
Character Length, and 2 Stop Bits and 8 ‐ bit Character Length. Choosing no parity and
7 ‐ bit Character Length causes the RealScan 74 to send two (2) stop bits; the scanner
must also receive two (2) stop bits. If 8 ‐ bit Character length and parity is selected, only
one (1) stop bit is sent. Scan the appropriate Hex 0 through Hex 3 tag to set the Stop
Bits and Character Length.
Handshake
The Handshake parameter contains six selections. When considering these, note that
the scanner controls only RTS; however, it can monitor CTS. The following list
identifies each Handshake option.
•
RTS is always low, CTS is ignored ( Hex 0 tag).
•
RTS is always high, CTS is ignored ( Hex 1 tag).
•
Scanner raises RTS and waits for CTS to go high before transmitting ( Hex 2 tag).
•
Scanner raises RTS before transmitting and ignores the state of CTS ( Hex 3 tag).
•
RTS is always low and scanner waits for CTS to go high before transmitting ( Hex
4 tag).
•
RTS is always high and scanner waits for CTS to go high before transmitting ( Hex
5 tag).
Scan the appropriate Hex 0 through Hex 5 tag to set the Handshake option.