Mitsubishi Electric MELSEC iQ-R Series - Page 445

APPENDICES APPENDIX
Appendix 1 Read/Write by Device Extension Specification
443
A
Data to be specified
■Extension specification
Specify the value obtained by dividing the start input/output number of an intelligent function module by 16 in hexadecimal.
• ASCII code: Specify U (55H) at the head of data. Convert the numerical value to 3-digit ASCII code (hexadecimal), and
send it from the upper digits.
• Binary code: Send 2-byte numerical values from the lower byte (L: bits 0 to 7).
Ex.
Start input/output number 0010H of a module
Indirect specification of the start input/output number can also be performed by using the CPU module index
register.
Page 446 Access to index the network No. and start input/output number
■Device code and device number
Specify the following device. (Page 67 Devices)
• Module access device (G)
For the values of device codes, refer to the following section.
Page 70 Device code list
Using the index register of CPU module, the access target device number can be specified indirectly.
Page 447 Access to index the device number
Device extension specification example
Access the buffer memory (address: 1) of intelligent function module whose start input/output number is 0030H by specifying
subcommand 0080.
■Data communication in ASCII code
■Data communication in binary code
ASCII code Binary code
55 H 30 H 30 H 31 H
U001
01 H 00 H
00
30H 30H
00
30H 30H
80
38H 30H
U0
55H 30H
03
30H 33H
00
30H 30H
00
30H 30H
01
30H 31H
00
30H 30H
0
30H
G
47H
*
2AH
00
30H 30H
0
30H
Device
code
Subcommand
Extension
specification
Device number
00 H 00 H 01 H 00 H 00 H 80 H 00 H F8 H 00 H AB H 00 H 03 H 00 H
Subcommand
Device
code
Device number
Extension
specification