add DET_Z motor

cfg/SAR-EXPMX3.cfg

@@ -38,7 +38,7 @@ Motor[5].IdCmd=0;Motor[5].InPosBand=10
 &1
 
 //initialization code
-open plc 0
+open plc 1
   homez1..5
   L0 = Sys.RunTime + .1
   while (Sys.RunTime < L0){} //wait .1 sec
@@ -55,9 +55,13 @@ open plc 0
     Motor[4].HomePos=Motor[4].HomePos-360000
   if (Motor[5].ActPos-Motor[5].HomePos<-180000)
     Motor[5].HomePos=Motor[5].HomePos-360000
-  disable plc 0
-close // plc 0
+  disable plc 1
+close // plc 1
 
-enable plc 0
+enable plc 1
+
+
+//motor 1..5 use custom code to kill motor and use brake
+!holding_current(m6=[0,700])