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5-4 Model 2790 SourceMeter

Switch System User’s Manual

RS-232 interface (PLC or PC)

A PLC uses the RS-232 interface for communications with the Model 2790. A PC can also

use the RS-232. Available 2790 settings for the RS-232 interface:

• Baud rate: 19.2K, 9600, 4800, 2400, 1200, 600, or 300

• Flow control: XonXoff or NONE

• Tx terminator: CR, LFCR, LF, or CRLF

The RS-232 menu of the 2790 is accessed by pressing and releasing SHIFT and then

pressing RS-232. Once in the menu, use the following key-press sequence to select and

conﬁgure the RS-232:

Select RS-232: ON > select BAUD rate > select FLOW control > select Tx TERMinator

GPIB (PC only)

The GPIB (which is faster than RS-232) can be used if an IEEE-488 Interface card (e.g.,

KPCI-488) is installed in the computer.

The GPIB menu of the Model 2790 is accessed by pressing and releasing SHIFT and then

pressing GPIB. Once in the menu, use the following key-press sequence:

Select GPIB: ON > select ADDRess (address 16 is set at factory)

Keithley 2790 User Manual

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