Mitsubishi Electric MELSEC iQ-R Series - Page 1643

18 CC-LINK IE FIELD NETWORK INSTRUCTIONS
18.9 Sending an SLMP Frame
1641
18
Processing details
• These instructions send the request data in the device specified by (s2) or later to the target station specified with the
control data. When a response message is received from the target station, it is stored in the device specified by (d1).
The following figures show the request data and the response data in normal/abnormal end.
●Request data
●Response data
• The J(P).SLMPREQ and G(P).SLMPREQ instructions communicate in binary code.
• A serial number is automatically given to the subheader.
Ex.
Sending "Read (command: 0401H)" (read in units of words) which reads the value in D100 to D102
●Request data
(s1)+3(s1)+5(s1)+4 (s1)+9 (s2)+1~(s2)+n
Request
destination
module I/O No.
Header FooterSubheader
Request
destination
station No.
Request
destination
network
No.
Request
destination
multidrop
station No.
(Not used)
Request data
length
Monitoring timer
(Not used)
Request data
Specified by (s1)
Automatically added.
Specified by (s2)
00H
(fixed)
0000H (fixed)
Specified by (s1)
(d1)+0 (d1)+1~(d1)+n
(d1)+0
(d1)+1~(d1)+n
Request
destination
module I/O No.
Header
(When completed)
Subheader
Request
destination
station No.
Request
destination
network
No.
Request
destination
multidrop
station No.
Request
destination
station No.
Request
destination
network
No.
Request
destination
multidrop
station No.
Response data
length
End code Response data
Footer
Footer
Request
destination
module I/O No.
Header
(When failed)
Subheader
Response data
length
Request
destination
module I/O No.
Station No.
(responding
station)
Network No.
(responding
station)
Request
destination
multidrop
station No.
Command SubcommandEnd code
Stored in (s1)+10
Stored in (d1)
Stored in (d1)
Stored in (s1)+10
01H 04H 00H 00H 64H 00H 00H A8H 03H 00H
04H
00H
00H
A8H
00H
01H
00H
64H
00H
03H
b8b7 b0
......
b15
(s2)+2
(s2)+3
(s2)+4
(s2)+5
(s2)+6
Device
code
Head device No.
Subcommand
No. of device
points
Command