Mitsubishi Electric MELSEC-Q00U(J)CPU User Manual page 237

(2) Commands
The following table lists the MC protocol commands that can be executed.
Function
In units of
bits
Batch read
In units of
words
In units of
bits
*1
Batch write
In units of
words
In units of
Random read
words
*2*3
Device
memory
In units of
bits
*1
Test
In units of
(random write)
words
Monitor
In units of
registration
words
*2 *3 *4
In units of
Monitor
words
*1 To perform online change, check the "Permit" checkbox under "RUN write setting".
*2 Devices such as TS, TC, SS, SC, CS, and CC cannot be specified in units of words. For the monitor registration, an
error (4032 ) occurs during the monitor operation.
H
*3 The monitor condition specification cannot be used for these commands.
*4 Do not execute monitor registration from multiple external devices. If executed, the last monitor registration becomes
valid.
*5 Set the number of processing points within the range of the following calculation formula.
(number of word access points) × 12 + (number of double word access points) × 14  960
•
One point of a bit device corresponds to 16 bits for word access or to 32 bits for double word access.
•
One point of a word device corresponds to one word for word access or to two words for double word access.
Command
0401(00  1) Reads bit devices in units of 1 point.
Reads bit devices in units of 16 points.
0401(00  0)
Reads word devices in units of 1 point.
1401(00  1) Writes bit devices in units of 1 point.
Writes bit devices in units of 16 points.
1401(00  0)
Writes word devices in units of 1 point.
Reads bit devices in units of 16 points or 32 points
by specifying the device or device number at
random.
0403(00  0)
Reads word devices in units of 1 point or 2 points by
specifying the device or device number at random.
Sets/resets bit devices in units of 1 point by
1402(00  1)
specifying the device or device number at random.
Sets/resets bit devices in units of 16 points or 32
points by specifying the device or device number at
random.
1402(00  0)
*2
Writes word devices in units of 1 point or 2 points by
specifying the device or device number at random.
Registers bit devices to be monitored in units of 16
points or 32 points.
0801(00  0)
Registers word devices to be monitored in units of 1
point or 2 points.
Monitors devices registered for monitoring.
0802(00  0)
Processing
CHAPTER 3 FUNCTIONS
Number of
processing points
ASCII: 3584 points
BIN: 7168 points
480 words (7680 points)
480 points
ASCII: 3584 points
BIN: 7168 points
480 words (7680 points)
480 points
96 points
94 points
*5
96 points
96 points
Number of monitor
registration points
235
3