Measurement Specialties USB-1616HS-2 manual Examples of control outputs

USB-1616HS-2 User's Guide Functional Details

ƒA value of 0 indicates that the setpoint criteria are not met—in other words, the condition is False.

ƒA value of 1 indicates that the criteria have been met—in other words, the condition is True.

In the following example, the criteria for setpoints 0, 1, and 4 is satisfied (True), but the criteria for the other 13 setpoints has not been met.

Setpoint #	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
True (1)	0	0	0	0	0	0	0	0	0	0	0	1	0	0	1	1
False (0)	<<<	Most significant bit											Least	significant bit >>>

From the table above we have 10011 binary, or 19 decimal, derived as follows:

ƒSetpoint 0, having a True state, shows 1, giving us decimal 1.

ƒSetpoint 1, having a True state, shows 1, giving us decimal 2.

ƒSetpoint 4, having a True state, shows 1, giving us decimal 16.

For proper operation, the setpoint status register must be the last channel in the scan list.

Examples of control outputs

Detecting on analog input, DAC, and FIRSTPORTC updates

Update mode: Update on True and False

Criteria: Channel 5 example: below limit; channel 4 example: inside window

In this example, channel 5 is programmed with reference to one setpoint (limit A), defining a low limit.

Channel 4 is programmed with reference to two setpoints (limit A and limit B) which define a window for that channel.

Channel	Condition	State of detect signal	Action
5	Below limit A (for	True	When channel 5 analog input voltage is below the limit
	channel 5)		A, update DAC1 with output value 0.0 V.
		False	When the above stated condition is false, update DAC1
			with the Output Value of - 1.0 V.
4	Within window	True	When Channel 4's analog input voltage is within the
	(between limit A and		window, update FIRSTPORTC with 70h.
	limit B) for channel 4
		False	When the above stated condition is False (channel 4
			analog input voltage is outside the window), update
			FIRSTPORTC with 30h.

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