System calculations
EST3 Installation and Service Manual B.27
Table B-11: CPU memory calculation worksheet
Line Variable # Formula Result
A Base usage N/A N/A 70,000
B Label usage N/A 48+(22 x (H+K+L+N+Q+S+T))
C Average number of characters in a
message
Between 0 and 42
D Average number of characters in a
rule
Between 4 and 10 per controlled
output
E Number of routing definitions 2 + (E x 8)
F Number of rail modules other than
Signature controller modules
F x 916
G Number of Signature controller
modules
G x 1,776
H Number of zones H x (22 + C + (J x 4) + (D x 2))
J Average number of devices in typical
zone
N/A
K Number of Service groups K x (14 x C + (2 x D))
L Number of AND groups L x (22 + C + (D x 2) + (M x 4))
M Average number of devices in AND
Group
N/A
N Number of Matrix groups N x (22 + C + (2 x D) + (4 x P))
P Average number of devices in a
Matrix Group
N/A
S Number of time controls S x ((26 + C) + (2 x D) + 14))
T Number of Guard Patrols T x (22 + C + (V x 4) + (U x 4))
U Number of Guard Patrol routes N/A
V Number of Guard Patrol stations N/A
W Number of physical devices W x (46 + C + (Y x 4) + (2 x D) + 8)
Y Average number of Logics per device N/A
Z Sum of Results Lines A to Y A+B+C+D+E+F+G+H+J+K+L+M+N+
P+S+T+U+V+W+Y
If result on line Z is less than 262,144, no additional memory is required.
If result on line Z is greater than 500,000 then enter the job in 3-SDU to determine the exact size
requirement (size of CABxx.bin file).
If result on line Z is still greater than 500,000 reduce the number of points on the panel, for example, by
splitting the panel into two panels.
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