FC1861 controller with 2 line card, max. 504 points
FC1862 controller with 4 line card, max. 1008 points
FC1863 controller with 6 line card, max. 1512 points
Panel can be extent up to 8 line card, max. 2016 poinss
Each line card can be used as a full loop with 252 point of two stub (sub-loop) the total point of 02
sub loop should not over 252 point