This variable allows setting of individual input trigger conditions. The OCTETS are interpreted bit-by-bit, with each bit corresponding to an input. Bit 0 corresponds to the LSB. The four OCTETS contain the mask which determines which of the inputs are to be considered (corresponding bit = 1) and which inputs are to ignore (corresponding bit = 0): OCTET 1: unused OCTET 2: unused OCTET 3: unused OCTET 4: Bit 0: Input 0 falling edge Bit 1: Input 0 rising edge Bit 2: Input 1 falling edge Bit 3: Input 1 rising edge Bit 4-7: unused