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© National Instruments Corporation
DATA FORMAT
GPIB ADDRESS
Figure 2-1. Default Setting (S Mode) for DIP Switch
In Figure 2-1, switches 1 through 3 are ON, OFF, and ON, respectively,
indicating that the serial port is operating at 9600 baud. Switches 4 and 5
are both OFF, indicating that parity is disabled. Switch 6 is OFF, indicating
1 stop bit/character. Switch 7 is ON, indicating that the GPIB-232/485CT-A
is using 8 bits per character for serial data transfers. Switch 8 is OFF,
indicating that the GPIB-232/485CT-A is operating in S mode.
Tables 2-1 and 2-2 show the possible configurations for the baud rate and
data format switches when you are using S mode and what each
configuration indicates. The factory default settings are in bold.
Table 2-1. S Mode Switch Settings for Baud Rate
Switches
1
OFF
OFF
ON
OFF
OFF
ON
ON
ON
OFF
OFF
ON
OFF
OFF
ON
ON
ON
Chapter 2
S MODE
BAUD RATE
1 2 3 4 5 6 7 8 ON
G MODE
2
3
OFF
OFF
OFF
OFF
ON
ON
ON
ON
2-2
Configure and Install Your Hardware
OFF
Indication
300 baud
600 baud
1200 baud
2400 baud
4800 baud
9600 baud
19200 baud
38400 baud
GPIB-232/485CT-A for Windows
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