Question

1. In Sequential function chart of S7-200 series PLC program, we use (    ) to jump into other step or steps.

A. SCR B. SCRT C. SCRE                                        D. JMP

2. To gain a value of certain temperature, a signal of circuit among 4~20mA access to PLC AI module. We call this signal is (    ) signal.

A. analog B. digital C. Periodic D. output

Answer 1