User`s manual

9
DEVICE EXPLANATION
9.2 Internal User Devices
9 - 3
9
Device Explanation
10
CPU Module Processing Time
11
Procedure for Writing Program to CPU ModuleAppendicesIndex
(3) Memory capacity
Use the following expression to obtain the memory capacity of an internal user device.
(Bit device capacity) + (Word device capacity) + (Timer, retentive timer and
counter capacity) 12384 words
(a) For bit devices:
For bit devices, 16 points are calculated as 1 word.
(b) For timer (T) retentive timer (ST), and Counter (C):
For the timer, retentive timer, and counter, 16 points are calculated as 18 words.
(c) For word devices:
For data registers (D), link registers (W), and special register(SD), 16 points are
calculated as 16 words.
POINT
When the number of used points of internal user devices is changed with the PLC
parameters, any sequence program created with the pre-change parameters
cannot be used as it is.
When the number of used points of internal user devices is changed, write the
parameters and sequence program to the CPU module.
16
(Total number of points of X, Y, M, B, F, SB, V)
(Bit device capacity) =
(words)
16
(Timer, retentive, counter capacity) =
(Total number of points of T, ST, C)
18 (words)
16
(Total number of points of D, W, SD)
(Word device capacity) =
16 (words)