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Section

8: TSP command reference Model 2461 Interactive SourceMeter® Instrument

Reference Manual

8-54 2461-901-01 A/November 2015

Details

The binary equivalent of the returned value indicates the value of the input lines on the digital I/O port.

The least significant bit (bit B1) of the binary number corresponds to digital I/O line 1; bit B6

corresponds to digital I/O line 6.

For example, a returned value of 42 has a binary equivalent of 101010, which indicates that lines 2, 4,

6 are high (1), and the other lines are low (0).

An instrument reset does not affect the present states of the digital I/O lines.

All six lines must be configured as digital control lines. If not, this command generates an error.

Example

data = digio.readport()

print(data)

Assume lines 2, 4, and 6 are set high when the

I/O port is read.

Output:

This is binary 101010

Also see

digio.writeport() (on page 8-54)

Digital I/O port configuration (on page 3-87)

digio.writeport()

This function writes to all digital I/O lines.

Type TSP-Link accessible

Affected by Where saved Default value

Function

Yes

Usage

digio.writeport(data)

data

The value to write to the port (0 to 63)

Details

This function writes to the digital I/O port by setting the binary state of each digital line from an integer

equivalent value.

The binary representation of the value indicates the output pattern to be written to the I/O port. For

example, a value of 63 has a binary equivalent of 111111 (all lines are set high); a data value of 42

has a binary equivalent of 101010 (lines 2, 4, and 6 are set high, and the other 3 lines are set low).

An instrument reset does not affect the present states of the digital I/O lines.

All six lines must be configured as digital control lines. If not, this command generates an error.

Keithley 2461 Reference Manual

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