In PLC tagging, what does the last component of a tag denote?

In PLC tagging, what does the last component of a tag denote?

• A. Terminal Location Number
• B. Data Type
• C. Network Address
• D. Program File Name

Answer: (A)

In PLC tagging, the last part of a tag is used to identify the physical terminal location where the signal is wired on the I/O block. This direct link to the hardware makes it easy to trace a tag to its wiring and diagnose issues on the plant floor. For example, a tag like something on the form of …SensorX.12 has the terminal location number 12, indicating the exact terminal where that signal is connected. The other possibilities describe attributes not tied to the wiring: data type is about how the value is interpreted, not where it’s connected; network address relates to device addressing on a network; and a program file name concerns project organization, not the hardware connection.

In PLC tagging, the last part of a tag is used to identify the physical terminal location where the signal is wired on the I/O block. This direct link to the hardware makes it easy to trace a tag to its wiring and diagnose issues on the plant floor. For example, a tag like something on the form of …SensorX.12 has the terminal location number 12, indicating the exact terminal where that signal is connected. The other possibilities describe attributes not tied to the wiring: data type is about how the value is interpreted, not where it’s connected; network address relates to device addressing on a network; and a program file name concerns project organization, not the hardware connection.