Measurement Computing Serial488/4 - Manual (Page 26)

Section 1 Introduction
2.14
Configuration of the serial ports may be accomplished at any time by
sending one or more command strings to the Serial488/4 command/status
address. Configuration commands may be sent individually or grouped
together to fully setup a port using only one message. Furthermore all four
serial ports may be configured using only one message so long as each port
setup begins w ith a Port ( Pn) command and ends with an E xecute (X)
command. Several examples are presented below to
illustrate different
configuration methods.
Example 1: Configure all ports using dual primary addressing mode.
PRINT#1,"CLEAR08" reset the Serial488/4
PRINT#1,"OUTPUT08;P1X"
Select port 1
PRINT#1,"OUTPUT08;A0B3C1D0X"
Specify 1 stop bit, 1200 baud, odd
parity, and 7 data bits
PRINT#1,"OUTPUT08;P2X"
Select port 2
PRINT#1,"OUTPUT08;A1B9C0D1X"
Specify 2 stop bits, 9600 baud, no
parity, and 8 data bits
PRINT#1,"OUTPUT08;P3X"
Select port 3
PRINT#1,"OUTPUT08;A0B7C2D1X"
Specify 1 stop bit, 4800 baud, even
parity, and 8 data bits
PRINT#1,"OUTPUT08;P4X"
Select port 4
PRINT#1,"OUTPUT08;A0B10C1D1X"
Specify 1 stop bit 19200 baud, no
parity, and 8 data bits
Example 2: Configure all ports using secondary addressing mode.
PRINT#1,"CLEAR0800"
Reset the Serial488/4
PRINT#1,"OUTPUT0800;P1A0B3C1D0X"
Select port 1 and specify
1 stop bit, 1200 baud, odd
parity, and 7 data bits
PRINT#1,"OUTPUT0800;P2A1B9C0D1X"
Select port 2 and specify
2 stop bits, 9600 baud, no
parity, and 8 data bits
PRINT#1,"OUTPUT0800;P3A0B7C2D1X"
Select port 3 and specify
1 stop bit, 4800 baud, even
parity, and 8 data bits