Mitsubishi MELSEC Q Series Reference Manual page 123

—
Command
(subcommand)
Function
Bit units 1402 (00 0)
2
Test ( )
[Random
write]
4
(refer to
Word units 1402 (00 0)
in
Section 3.2)
Monitor data
registration
Word units 0801 (00 0)
2
( )
Monitor Word units 0802 (0000)
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3 WHEN COMMUNICATING USING THE QnA COMPATIBLE 3E/3C/4C FRAMES OR 4E FRAME
Description of processing
Sets/resets bit devices in 1-
point units by designating the
devices at random.
Sets/resets bit devices in units
of 16 points and 32 points by
designating the units at
random.
Writes to word devices in 1-
point and 2-point units by
designating the devices at
random. (refer to 2 in
Section 3.2)
Registers the bit devices to be
monitored in units of 16 points
and 32 points.
Registers the word devices to
be monitored in 1-point and 2-
point units.
Monitors the devices
registered for monitoring.
in the programmable controller CPU status column of the table above indicates that the corresponding
function is executable.
1 Accessible CPU modules vary depending on the command. (Refer to Section 3.2)
2 The number of processing points for the ACPU is in units of one point for word
devices and 16 points for bit devices.
(2) Character areas (data fields in binary mode)
This section describes the common data in the character areas in each control
procedure when the external device reads and writes programmable controller
data.
POINT
(1) The character area depends on the command used and the content specified.
This section describes the data common to the character areas when the
device memory to be read or written is designated directly.
(2) Character area data handled only by a certain command and not by others, is
described in the section that describes the corresponding command.
(3) The following sections describes data handled by some of the functions and
data for specifying device memory extension using a special expression.
• Section 3.3.9
• Appendix 1
Number of points processed per
communication
7 9
(refer to to in Section 3.2)
Access Access
station-1 station-2
188 points 94 points
(refer to Section 3.3.8)
192 points 96 points
(for number of registered points)
: Data designated by the random read word units
(command: 0403) and monitor data registration
(command: 0801) functions.
: Data used to designate the extension of the device
memory to be read or written.
Programmable controller
CPU status
1
(refer to
Section 3.2)
During RUN
Access During
Write
station-3 STOP
enabled disabled
20 points
10 words
(160 points)
10 points
(Disabled)
in
Reference
Write
Sections 3.3.5
and 3.3.8
Section 3.3.10
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