Version 4
SHEET 1 1140 848
TEXT 0 40 Left 0 !.param abc=5
TEXT 8 376 Left 0 !.subckt test1 1\n.param abc=3\nV1 1 0 {abc}\n.ends
TEXT 8 88 Left 0 !X1 10 test1\nX2 20 test1 abc=7
TEXT 0 0 Left 0 !.op
TEXT 288 48 Left 0 ;--- Operating Point ---\n \nV(10):           3               voltage\nV(20):           7               voltage\nV(30):           3               voltage\nV(40):           7               voltage\nV(50):           5               voltage\nV(60):           7               voltage\nV(70):           5               voltage\nV(80):           7               voltage
TEXT -8 -112 Left 0 ;Watch that global parameter abc=5 is only passed \nif it's specified in the .subckt-line as in test3 and test4..\nPassed parameters always overwrite the internal defaults.
TEXT 16 512 Left 0 !.subckt test3 1 xyz={abc}\n.param xyz=3\nV1 1 0 {xyz}\n.ends
TEXT 8 152 Left 0 !X3 30 test2\nX4 40 test2 abc=7
TEXT 360 376 Left 0 !.subckt test2 1 abc=3\nV1 1 0 {abc}\n.ends
TEXT 8 216 Left 0 !X5 50 test3\nX6 60 test3 abc=7
TEXT 360 512 Left 0 !.subckt test4 1 xyz={abc}\n.param xyz=3\nV1 1 0 {abc}\n.ends
TEXT 8 280 Left 0 !X7 70 test4\nX8 80 test4 abc=7