Mitsubishi Electric MELSEC IQ-R series Reference Manual page 102

■Subcommand
The read timing can be changed by specifying monitor conditions according to the selection of subcommand. (Page 81
Monitor condition specification)
For 2C frame, the specification is not required. Functions and specification methods are equivalent to the subcommands that
do not specify monitor conditions for MELSEC-Q/L series.
When do not specify monitor condition
Type
For MELSEC-Q/L series
For MELSEC iQ-R series
When specifying a monitoring condition
*1 The access targets to which a monitor conditions can be specified have some restrictions. (Page 471 Accessible Modules for Each
Command)
Type
For MELSEC-Q/L series
At monitor condition specification, use the subcommand 00C0 for the device extension specification. The
message format for device extension specification is the same as that of 008 . Refer to it by substituting 008
 to 00C0.
Page 438 Read/Write by Device Extension Specification
■Monitor condition specification
Specify the conditions for timing to read data. (Page 81 Monitor condition specification)
When do not specify the monitor condition, the specification of this data item is not required.
■Number of word access points, number of double word access points
Specify the number of device points to be read within the following range. (Page 72 Access points)
Access target
MELSEC iQ-R series module (subcommand: 0000)
MELSEC-Q/L series module (subcommand: 0000)
MELSEC iQ-R series module (subcommand: 0002, 008)
MELSEC-Q/L series module (subcommand: 0080)
MELSEC-QnA series module
Module on other station via MELSEC-QnA series network module
MELSEC-A series module
The number of point is specified in the following units depending on device type.
Device type
Bit device
Word device, double word device
When using subcommand for MELSEC-Q/L series module, calculate it as access points  2 in the following
case.
• When specifying the file register (ZR) of High Performance model QCPU
■Device
Specify the device to be read. (Page 67 Devices)
8 DEVICE ACCESS
100
8.3 Random Read and Write
ASCII code
0 0 0 0
30 30 30 30
H H H H
0 0 0 2
30 30 30 32
H H H H
*1
ASCII code
0 0 4 0
30 30 34 30
H H H H
Range
1  Number of word access points + Number of double word access points 
192 points
1  Number of word access points + Number of double word access points 
96 points
Cannot be used.
Number of word access points
16-point units
1 word units
Binary code
00 00
H H
02 00
H H
Binary code
40 00
H H
Number of double word access points
32-point units
2 word units