this is NOT an IIWA robot with Sunrise Controller and smartPad.
this is predecessor of IIWA where LR stands for "lightweight robot".
like with other KRC2 units, teach pendant is KCP2 (Kuka Control Panel).
So controller KRC2-LR is based on KRC2 but .... not to be confused with other variants like KRC2-SR:
a) KRC2 and KRC2-ed05 are used for normal KUKA robots
b) KRC2-SR is small controller for small robot arms (Denso)
c) KRC2-LR is a small controller for lightweight robot arm (LBR4, predecessor of IIWA).
all of them have X11 safety interface but .... each of them has different connections.
in other words do NOT use some random "X11 circuit" such as one for KRC2 or KRC2-SR to make X11 connections on KRC2-LR or the other way around. always use correct documentation for your specific controller type or this can get expensive real fast - if you did not damage it already. for example first two circuits in X11 for KRC2-SR show E-Stop connections 1-20 and 2-21. But that is KRC2-SR and you don't want to make such connections on a KRC2-LR, because each of those connections creates short circuit between pulsed outputs TA24V(A) and TA24V(B)...
Image below shows how KRC2-LR looks like. Note large label in upper left corner. Read it.
Then get CORRECT documentation. Read it.
Then connect things carefully and check your work.
Then power up.
So the first thing to check out should be READ FIRST:
It tells among other things how and where to find info.