Sending And Receiving Data - Keithley 2601B Reference Manual

Series 2600B System SourceMeter® Instrument Reference Manual
Setting RS-232 interface parameters
To set interface parameters from the front panel:
1. Press the MENU key, select RS232 and then press the ENTER key or the navigation wheel
2. Select and enter the following interface parameters:
•
BAUD: Set baud rate (see
•
BITS: Set number of bits (see
•
PARITY: Set parity
•
FLOW-CTRL: Set
•
ENABLE: Enable or disable the RS-232 interface
1. Press the EXIT (LOCAL) key twice to return to the normal display.
Remote RS-232 parameters
Commands to set RS-232 parameters are listed in the following table. See the
reference
RS-232 interface commands
Command
serial.baud = baud
serial.databits = bits
serial.flowcontrol = flow
serial.parity = parity
Changes to a serial port setting take effect when the command is processed. Any response
messages generated after the commands are processed will be sent with the new settings. If
command messages are being queued (sent before the commands have executed), the new settings
may take effect in the middle of a subsequent command message, so care should be exercised when
setting these attributes from the RS-232 interface.
RS-232 programming example
The programming example below illustrates how to set the baud rate to 9600 with no flow control:
serial.baud = 9600
serial.flowcontrol = serial.FLOW_NONE

Sending and receiving data

The RS-232 interface transfers data using 7 or 8 data bits; 1 stop bit; and no, even, or odd parity.
Make sure the device you connect to the Series 2600B also uses the same settings.
2600BS-901-01 Rev. B / May 2013
Baud rate
Flow control and signal handshaking
(on page 7-1) for more information.
Description
Set baud rate (300, 600, 1200, 2400, 4800, 9600, 19200,
38400, 57600, 115200)
Set number of bits (7 or 8)
Set flow control:
serial.FLOW_NONE (no flow control)
serial.FLOW_HARDWARE (hardware flow control)
Set parity:
serial.PARITY_NONE (no parity)
serial.PARITY_EVEN (even parity)
serial.PARITY_ODD (odd parity)
(on page 2-110))
Data bits and parity (on page 2-110))
(on page 2-110)
Section 2: General operation
.
TSP command
2-109