When assigning a number for USER key 1 on controllers R-J3iB and earlier, which statement is true?

When assigning a number for USER key 1 on controllers R-J3iB and earlier, which statement is true?

• A. You can only use SP[1]
• B. You can only use SP[4]
• C. You can use any SP[1-4]
• D. You can configure it to no specific SP value

Answer: (B)

In the context of configuring USER key 1 on controllers R-J3iB and earlier, the correct approach is to assign it specifically to SP[4]. This configuration is important because SP[4] is designed to execute a specific function mapped to USER key 1, allowing for precise control in programming or operation setups. This design means that while other special purpose options like SP[1], SP[2], and SP[3] exist, when it comes to USER key 1, SP[4] serves as the only valid assignment. This limitation ensures that the system maintains clear operational definitions and avoids conflicts that could arise from assigning multiple functions to the same USER key. While the other options suggest using different SP values or a general configuration, they do not align with the strict mapping required for USER key 1 on these specific controllers. Thus, the use of SP[4] is confirmed as the recognizable standard for this particular setting in FANUC's programming structure.

In the context of configuring USER key 1 on controllers R-J3iB and earlier, the correct approach is to assign it specifically to SP[4]. This configuration is important because SP[4] is designed to execute a specific function mapped to USER key 1, allowing for precise control in programming or operation setups.

This design means that while other special purpose options like SP[1], SP[2], and SP[3] exist, when it comes to USER key 1, SP[4] serves as the only valid assignment. This limitation ensures that the system maintains clear operational definitions and avoids conflicts that could arise from assigning multiple functions to the same USER key.

While the other options suggest using different SP values or a general configuration, they do not align with the strict mapping required for USER key 1 on these specific controllers. Thus, the use of SP[4] is confirmed as the recognizable standard for this particular setting in FANUC's programming structure.