N.B.: if you forget step 3 (that is, if there is not a single DCC Lokin the refresh cycle), then you'll most likely cause a "bad programming"of the k87. It shall then be necessary to "recover" it by programming iton the PT: Register Prog., Register 1, Value = 128 + decoder address.E.g. program register #1 to the value 129 in oder to have that turnoutdecoder control turnout addresses #1..4.For other turnout addresses, the computation is:((turnout address - 1) / 4) + 1where 'turnout address' must be the first turnout address of that decoder.For example, for a turnout decoder controlling turnouts 17/18/19/20:((17 - 1) / 4) + 1 = 5therefore, you must program register #1 to the value 128 + 5 = 133.