Channel.write() - Keithley 3700A Series Reference Manual

Series 3700A System Switch/Multimeter Reference Manual

channel.write()

This function writes a value to a channel.
Type TSP-Link accessible
Function Yes
Usage
channel.write("channelList", value)
channel.write("channelList", value, width)
channelList
value
width
Details
For widths greater than 1, the specified channel occupies the least significant byte. For example,
writing the value of 4278255360 (hexadecimal FF00FF00) to channel 1 with a width of 4 sets channel
1 to 0, channel 2 to 255 (hexadecimal FF), channel 3 to 0, and channel 4 to 255 (hexadecimal FF).
Writing the value of 4278255360 to channel 1 with a width of 1 sets channel 1 to 0 and leaves other
channels untouched.
You must use decimal values when sending commands to the Series 3700A.
For digital I/O channels, only widths of 1, 2, 3, or 4 are supported. All other widths are ignored. Values
written to inputs are ignored. If no specified channel is set for output, then an error is generated. If a
width crosses channels, then only the channels set to output are affected.
Totalizers, DACs, and switch channels do not support a width other than 1. Specifying a width greater
than 1 results in an error.
For a channel with a power state of OFF, an error is generated. No action is taken on any channel in
the specified channel list.
For DAC channels, the value is expected to be the set floating-point voltage or current. Also, an error
is generated if the value is out of range. No action is taken on any channel in the specified channel
list.
For digital I/O channels, the value becomes the setting of the digital output.
For totalizer channels, the value becomes the new current totalizer count.
The time it takes to execute the write command is affected by the channel delay setting.
Example
channel.write("1001", 33)
channel.write("1006", 0)
Also see
None
3700AS-901-01 Rev. D/June 2018
Affected by Where saved
The channels to set, using standard channel naming
The value to be written to the channel (must be decimal value)
Value that specifies the channel width of the write
Section 11: TSP command reference
Default value
Output a value of 33 to digital I/O channel 1.
Set totalizer channel 6 on slot 1 (assuming a
3750 card) to 0.
11-105