The OREFs shown: 
A) are used to send a value to an output device or tag.
B) are used to receive a value from an input device or tag.
C) must contain tags.
D) both a and c.
Correct Answer:
Verified
Q1: Similar to Ladder Logic Programming, Functional Block
Q3: The IREFs shown in the FBD:
Q4: A sheet of a FBD consists of:
A)function
Q5: For the FBD shown,the dash line indicates:
Q5: Function block connections are made using wires
Q6: For the BAND function block shown:
Q8: The pins on the left of a
Q12: The acronym IREF stands for internal reference.
Q13: Each OCON must have at least one
Q19: Add-on instructions are special purpose instructions that
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