Keithley 2600a series User Manual

15-8 Return to Section Topics 2600AS-901-01 Rev. B / September 2008
Section 15: Communications Interfaces Series 2600A System SourceMeter® Instruments Reference Manual
LOCAL key
The LOCAL (EXIT) key cancels the remote state and restores local operation of the instrument.
Pressing the LOCAL key also turns off the REM indicator and returns the display to normal if a
user-defined message was displayed.
If the LLO (Local Lockout) command is in effect, the LOCAL key is also inoperative. For safety
reasons, the OUTPUT OFF key can be used to turn the output off while in LLO. Note that pressing
LOCAL or OUTPUT OFF will also abort any commands or scripts that are being processed.
RS-232 interface operation
Setting RS-232 interface parameters
Front panel RS-232 parameters
To set interface parameters:
1. Press MENU > RS232 and then press ENTER the navigation wheel.
2. Select and enter the following interface parameters:
• Baud rate
• Number of bits
•Parity
• Flow control
(See the following section for details)
3. Press EXIT as needed to back out of the menu structure.
Remote RS-232 parameters
Commands to set RS-232 parameters are listed in Table 15-2. See Section 19 for more
information.
Note that changing the serial port settings take effect when the command is processed. Any
response messages generated after processing these commands will be sent with the new
settings. If command messages are being queued (sent before these 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.
Table 15-2
RS-232 interface commands
Command Description
serial.baud = baud
serial.databits = bits
serial.flowcontrol = flow
serial.parity = parity
Set baud rate (300, 600, 1200, 2400, 4800, 9600,
19200, 38400, 57600, or 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)

Keithley 2600a series Specifications

General

Brand	Keithley
Model	2600a series
Category	Measuring Instruments
Language	English