Internal User Devices - Mitsubishi MELSEC QS Series User Manual

9
DEVICE EXPLANATION

9.2 Internal User Devices

(1) Definition
(2) Internal user device setting range
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- 2 9.2 Internal User Devices
Internal user devices can be used for various user applications.
The "number of usable points" setting is designated in advance (default value) for
internal user devices.
However, this setting can be changed at the "Device" tab screen in the "(PLC)
Parameter" dialog box.
Diagram 9.1 Device in PLC parameter dialog box
The number of used points of internal user devices other than CPU module input (X),
output (Y), link special relay (SB), or link special register (SW) can be changed within
the range of 9.75k words with the PLC parameter device settings.
The following gires more information.
(a) Setting range
The number of device points is designated in 16-point units.
A maximum of 32 k points can be designated for one device.
1 point is calculated as 2 points (1 for coil, 1 for contact) for the timer, retentive
timer, and counter.
Default value
For device whose number of
points can be changed, number
of used points can be changed.