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(3) Functions
Table6.40 shows the MC protocol commands that can be executed by the serial communication function.
Table6.40 MC protocol commands supported by the serial communication function
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
Device
memory
In units of
bits
*1
Test
(random write)
In units of
words
Monitor
In units of
registration
words
In units of
Monitor
words
*1: When writing data while the CPU module is in the RUN status, set "RUN write setting" to "Permit".
*2: Set the number of processing points within the range of the following calculation formula.
(number of word access points)
• 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.
Writes bit devices in units of 1 point.
1401(00
1)
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)
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.
0802(00
0)
Monitors devices registered for monitoring.
12 + (number of double word access points)
Processing
14
960
CHAPTER6 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
*2
96 points
96 points
Number of monitor
registration points
6 - 123
1
2
3
4
5
6
7
8
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