def do_d(self, line):
index = self.index_from_line(line)<EOL>if index:<EOL><INDENT>self.application.apply_update(opendnp3.DoubleBitBinary(opendnp3.DoubleBit.DETERMINED_ON), index)<EOL><DEDENT>
Send the Master a DoubleBitBinaryInput (group 4) value of DETERMINED_ON. Command syntax is: d index