Mitsubishi Electric MELSEC-Q00U(J)CPU

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CHAPTER 3 FUNCTIONS
3
3.23 Serial Communication Function
(2) Commands
The following table lists the MC protocol commands that can be executed.
*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
H
) occurs during the monitor operation.
*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.
Function Command Processing
Number of
processing points
Device
memory
Batch read
In units of
bits
0401(00 
1)
Reads bit devices in units of 1 point.
ASCII: 3584 points
BIN: 7168 points
In units of
words
0401(00  0)
Reads bit devices in units of 16 points. 480 words (7680 points)
Reads word devices in units of 1 point. 480 points
Batch write
*1
In units of
bits
1401(00 
1)
Writes bit devices in units of 1 point.
ASCII: 3584 points
BIN: 7168 points
In units of
words
1401(00  0)
Writes bit devices in units of 16 points. 480 words (7680 points)
Writes word devices in units of 1 point. 480 points
Random read
*2*3
In units of
words
0403(00 
0)
Reads bit devices in units of 16 points or 32 points
by specifying the device or device number at
random.
96 points
Reads word devices in units of 1 point or 2 points by
specifying the device or device number at random.
Test
*1
(random write)
In units of
bits
1402(00 
1)
Sets/resets bit devices in units of 1 point by
specifying the device or device number at random.
94 points
In units of
words
*2
1402(00  0)
Sets/resets bit devices in units of 16 points or 32
points by specifying the device or device number at
random.
*5
Writes word devices in units of 1 point or 2 points by
specifying the device or device number at random.
Monitor
registration
*2 *3 *4
In units of
words
0801(00 
0)
Registers bit devices to be monitored in units of 16
points or 32 points.
96 points
Registers word devices to be monitored in units of 1
point or 2 points.
96 points
Monitor
In units of
words
0802(00 
0)
Monitors devices registered for monitoring.
Number of monitor
registration points