This function shows the pulse output state in the output terminal. Available for LT3000 series only.
#L_ExIOSpOut

| a: CH1 output state | [1]: Output, [0]: Not output | 
| b: CH2 output state | [1]: Output, [0]: Not output | 
| c: CH3 output state | [1]: Output, [0]: Not output | 
| d: CH4 output state | [1]: Output, [0]: Not output |