This variable allows setting of individual digital outputs. The OCTETS are interpreted bit-by-bit, with each bit corresponding to an output. Bit 0 corresponds to the LSB. The first four OCTETS contain the mask which determines which of the outputs are to be set (corresponding bit = 1) and which outputs are to remain unchanged (corresponding bit = 0): OCTET 1 : unused OCTET 2 : unused OCTET 3 : unused OCTET 4, Bit 1-7: unused Bit 0 : Mask for digital output OCTETS 5-8 contain the level (1=HIGH=Relais closed, 0=LOW Relais open) which the outputs to be changed should assume: OCTET 5 : unused OCTET 6 : unused OCTET 7 : unused OCTET 8, Bit 1-7: unused Bit 0 : Level of digital output