NCR RealPOS, Руководство пользователя

Страница: 92 / 187

5-46 Chapter 5: Programming
RS-232 Parameters 1
22772
Baud Rate
A
0
300
1
600
2
1200
3
2400
4
4800
5
9600
6
19200
Parity B
Stop Bits
And
Character
Length
C
Handshake
D
0
Odd
1
Even
4
None
0
1 Stop Bit
7-Bit Character
1
1 Stop Bit
8-Bit Character
2
2 Stop Bits
7-Bit Character
3
2 Stop Bits
8-Bit Character
0
RTS Low
Ignore CTS
1
RTS High
Ignore CTS
2
Raise RTS
Wait For
CTS
3
Raise RTS
Ignore CTS
4
RTS Low
Wait For
CTS
5
RTS High
Wait For
CTS
Your Program
Baud
Rate
A
RS-232
Parameters - 1
2 0
Parity
B
Stop Bits
And
Character
Length
C
Handshake
D
The RS-232 Parameters 1 programming mode contains four of the parameters required for RS-
232 communications. From this programming mode the Baud Rate, Parity, Stop Bits and
Character Length, and Handshake Options can be selected. Refer to the “Parameter Defaults”
section earlier in this chapter for the factory defined default value of each programming
parameter.
Baud Rate
The Baud Rate parameter contains seven selections: 300 Baud, 600 Baud, 1200 Baud, 2400
Baud, 4800 Baud, 9600 Baud, and 19200 Baud. Scan the appropriate
Hex 0 through Hex 6 tag
to set the desired Baud rate.
Parity
The Parity parameter contains three selections: Odd, Even, and None. For 7-bit characters, bit
8 is the parity bit; for 8-bit characters, bit 9 is the parity bit. Choosing no parity and 7-bit
character length causes the scanner to send two (2) stop bits; the scanner must also receive two
(2) stop bits. Scan the appropriate
Hex 0 , Hex 1 , or Hex 4 tags to select the desired Parity.