siemens
been working all night on this one.now i have more info ,see if anyone can give me a hand.
ive got here,cpu 941,one rack with four 32bit input cards and one im306,an expansion rack with 3 32 input cards and 5 32 bit output cards and a im306.
i disabled the second rack and left just one input card in slot 0
and one output card in slot 1.wiped the memory and did a one line program.ld e0.0 out a4.0.this works okay.leaving the input card where
it was i moved the output card to the right and changed to out a8.0.
okay.
did this trial with all the vacent slots leaving the input card where it was,and enabling the slot number via the im306.this rack works correctly.
i have a spare new im306.changed the im306 on the expansion rack for the new one and hooked up the link cable.inserted in slot 3 of the
expansion and changed my one line program to out a28.0.i configured the im 306 the same as the original.the output on my pg says it is on but i dont have anything on the output card.i have a spare link cable,ive changed it,but i still have the same problem.
stripped out the two backplanes.checked continuity on the pcb,even though they are fine tracks they were all okay(i dont know how they are reacting when installed with all the cards plugged in,but because i dont have a spare theres little i can do there.)