VeriStand System Channel - Real-Time Sequence Command Cannot Stop or Abort Active Real-Time Sequences

Updated Aug 18, 2026

Reported In

Software

  • VeriStand

Issue Details

The VeriStand system channel Real-Time Sequence Command is intended to stop or abort active real-time sequences using the following command values:

  • 0 = None
  • 1 = Stop All
  • 2 = Abort All

However, writing Stop All (1) or Abort All (2) to the channel does not stop or abort the active real-time sequence. The channel value updates successfully, but the active sequence continues to run.

Solution

A workaround is to modify the Real-Time Sequence Command channel definition in the SDF file and update the Value Table entries.
Original Value Table:
<Channel Name="Real-Time Sequence Command">
	<Description>Internally commands the active real-time sequences with the following numeric values:
0: None
1: Stop All
2: Abort All</Description>							
                 <Property Name="Value Table">
			<Dictionary>
				<Elem Key="None">
					<Double>0</Double>
				</Elem>
				<Elem Key="Stop All">
					<Double>1</Double>
				</Elem>
				<Elem Key="Abort All">
					<Double>2</Double>
				</Elem>
			</Dictionary>
		 </Property>
Updated Value Table:
<Channel Name="Real-Time Sequence Command">
	<Description>Internally commands the active real-time sequences with the following numeric values:
0: None
1: Stop All
2: Abort All</Description>							
                 <Property Name="Value Table">
			<Dictionary>
				<Elem Key="None">
					<Double>0</Double>
				</Elem>
				<Elem Key="Stop All">
					<Double>268435456</Double>
				</Elem>
				<Elem Key="Abort All">
					<Double>536870912</Double>
				</Elem>
			</Dictionary>
		 </Property>

After updating the SDF file:

  1. Save the modified System Definition File.
  2. Redeploy the VeriStand system.
  3. Execute the Stop All or Abort All command again.

The Real-Time Sequence Command channel should now successfully stop or abort the active real-time sequences as expected.

Additional Information

This issue is caused by a software bug. It exists in all the versions before 2026 Q3 and will be fixed in the VeriStand 2026 Q4.