Device Function - Mitsubishi Electric MELSEC Q Series User Manual

11.6

Device Function

Creates a device such as a programmable controller CPU in work RAM on the C Controller module.
(1) Device list
The following shows the device that can be created, initial values and setting range.
Type
Bit device
Word device
(2) Setting method
For this setting, use the following functions in
•
Project view  "Parameter"  "CCPU Parameter"  <<Device settings>>
(3) Precautions
(a) Number of device points
Set only the required number of device points.
Because a device is created in work RAM, the available range of work RAM, such as in a user program,
decreases due to an extra setting.
The consumption of work RAM is calculated by the following formulas.
• Bit device
16 points is calculated as one word.
(Consumption of work RAM in the bit device) =
((Number of points assigned to the internal relay (M)) + (Number of points assigned to the link relay (B)) / 16 [word]
• Word device
1 point is calculated as one word.
(Consumption of work RAM in the word device) =
((Number of points assigned to the data register (D)) + (Number of points assigned to the link register (W)) [word]
Device name
Number of points
Internal relay 8192 points
Link relay 8192 points
Data register 12288 points
Link register 8192 points
etting/monitoring tools for the C Controller module.
S
CHAPTER 11 BASIC FUNCTIONS
Q24DHC-V Q24DHC-VG Q24DHC-LS
Default value
Range
M0 to 8191 Decimal
B0 to 1FFF Hexadecimal
D0 to 12287 Decimal
W0 to 1FFF Hexadecimal
Q26DHC-LS Q12DC-V
11
Setting range
0 to 60K
0 to 640K
0 to 4086K
0 to 1024K
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