Introducing Message-Based DAQ
Introducing Message-Based DAQ
Introducing Message-Based DAQ
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CTR<br />
Sets and gets property values for counter channels.<br />
Properties<br />
VALUE, START, STOP<br />
The tables below list the messages used to get and set device parameters, the device response to each message, a description of the<br />
message, and the variable(s) the message may contain.<br />
Note: Refer to the device-specific information in the Hardware Reference section for the component properties and commands<br />
supported by each <strong>DAQ</strong> device.<br />
<strong>Message</strong> Device response Description<br />
"?CTR" "CTR=value" Returns the number of counter channels on the<br />
device.<br />
value = number of counter channels<br />
VALUE<br />
<strong>Message</strong> Device response Description<br />
"CTR{ch}:VALUE=value" "CTR{ch}:VALUE" Loads the specified counter with the specified<br />
value.<br />
ch = counter number<br />
value = counter value<br />
Example: "CTR{0}:VALUE=0"<br />
"?CTR{ch}:VALUE" "CTR{ch}:VALUE=value" Returns the value of the specified counter.<br />
ch = counter number<br />
value = counter value<br />
Example: "?CTR{0}:VALUE"<br />
START<br />
<strong>Message</strong> Device response Description<br />
"CTR{ch}:START" "CTR{ch}:START" Starts the specified counter channel.<br />
ch = counter number<br />
Example: "CTR{0}:START"<br />
STOP<br />
<strong>Message</strong> Device response Description<br />
"CTR{ch}:STOP" "CTR{ch}:STOP" Stops the specified counter channel.<br />
ch = counter number<br />
Example: "CTR{0}:STOP"<br />
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