5
MEMORIES AND FILES HANDLED BY CPU MODULE
5.4 File Operation by GX Developer and Handling Precautions
5.4.3 Memory capacities of files
5
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1
O
verv
iew
2
Per
fo
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nce
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p
ecifica
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ro
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4
I/O N
unb
er
Assig
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m
e
nt
5
Me
mor
ie
s a
nd
File
s
Ha
nd
led
by CP
U Mo
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6
Func
tions
7
Co
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Fun
ction
Mo
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.
* 1 : 136 is the default value. (It can be increased or decreased by parameter setting.)
* 2 : Round up "number of bit device points/16" to the right of the decimal point.
Remark
Refer to Section 5.4.4 for the memory capacity calculation example.
Table5.16 Memory capacity calculation for files (High Performance model QCPU, Process CPU, Redundant CPU) (Continued)
Function
Rough file capacity (unit: byte)
Sampling trace file
362 + (number of word device number of bit device points) 12 + (N1 +N2 + N3 +
number of word device points 2 + (number of bit device points/16) 2) number of traces (total
number of traces)
*2
• The following values are added to the N1 to N3 corresponding to the items set in trace
Additional information of trace condition settings screen. (
Section 6.14 (4)(b))
N1 : Add "4" at setting time
N2 : Add "10" at setting step No.
N3 : Add "8" at setting program name
Failure history data
72 + 54 (number of failures stored)
Local device
72 + 6 (set device type) + (2 ((total number of M and V points)/16 + (number of D points)
+18 (total number of T, ST and C points)/16)) (number of programs)
• M, V, D, T, ST and C indicate the following set devices.
M : Internal relay
V : Edge relay
D : Data register
T : Timer
ST : Retentive timer
C : Counter
