WinDaq Add-on Programmable Digital and Alarm Outputs

Operation

• Use button D0...D7 to enter the logical equation for the corresponding digital output
  
• Lower DIO channels on DI-2108/4208/4208/2008 are reserved as input by WinDaq as Event, Record, Rate and Counter channel, to use them, check Use All DIO for Outputs option. By choosing this option, all can be changed to outputs. If some of the input functions are needed in WinDaq, set the Dout to TRUE manually and you can send the digital signal to the port. For example, manually set D3 to TRUE, you can use D3 as counter channel in WinDaq
• If you wish to use Digital Inputs, Event, Rate or Counter inputs after you are done with the control, please either recycle the power on the instrument or manually set all DIO to TRUE before you exit this add on to reset the direction for all DIOs. WinDaq will not initialize the direction of the port.
• Data Window Size determines the number of data points when evaluating MIN, MAX, AVE, RMS and ACRMS
• Slides has three states. It controls the state of a corresponding output
• TRUE: assign TRUE unconditionally
• FALSE: assign FALSE state unconditionally
• PROG: Set the output to TRUE if the logical expression for the corresponding channel renders TRUE
• Please click here to learn how to configurate the basic math equation. Besides basic math, following extra control are available
• The syntax has up to four parts, separated by comma ","
• Optional first part sets up the initial state. For example, "INIT 1" force it to output 1 to start
• Optional second part address when to start
• DELAY n, where n is number of seconds to delay, to delay n seconds before doing anything. For example, DELAY 100
• DELAY n AFTER condition, where n is number of seconds to delay and condition is the logical expression, wait until the logical expression is true before delaying n seconds. For example, DELAY 100 AFTER CH1>1
• START <time> will not do anything until the time is due. For example, START 10:22:50AM or START 9/1/2025 11:11:11PM
• third part is the standard logical expression. For example, CH1*CH2>10
• Optional fourth part is if further comparison should be conducted, and its syntax is HOLD if the answer is no. In this mode, the trigger waits for the change from the initial state of the logical expression, for example, we use CH3>1, HOLD as the expression
• If CH3 is lower than 1 when the the addon is started, it waits until CH3 is higher than 1 before entering the HOLD state
• If CH3 is higher than 1 when the the addon is started, it waits until CH3 is lower than 1 before entering the HOLD state
• Here are some examples
• CH3>1: turn on DO if CH3 reading is above 1
• "DELAY 20, CH3>1" Do nothing for 20 seconds, then perform the comparison and output to Dx based on the result
• "CH3>1, HOLD" Once the reading on CH3 changes, the output will remain unchanged
• "DELAY 20, CH3>1" delay 20 seconds before performing the control
• "INIT 0, START 12:00:00PM, 1" Set initial state to 0, turn on DO at noon
• "INIT 0, DELAY 10 AFTER CH1>1, 1" Set initial state to 0, wait until CH1's reading is above 1, delay 10 seconds then set the state to 1
• Limitations
  • Not every data point is tested against the trigger condition, a compromise is to use data-window derived results, such as MIN, MAX, AVE, RMS and ACRMS . The add-on is paced by Windows' timer, up to 50Hz. 
  • When ChannelStretch is used, D0-6 appears in the first instrument only