Mitsubishi Electric MELSEC iQ-R Series Programming Manual page 1123

• The SP.SLMPSND instruction communicates using UDP. Set the external device to use UDP.
• The SP.SLMPSND instruction communicates in binary code. Match the setting of the external device also with the binary
code.
• The execution status and the completion status of the SP.SLMPSND instruction can be checked with the completion device
(d2) and the completion status indication device (d2)+1.
• Completion device (d2)+0
This device turns on during END processing of the scan where the SP.SLMPSND instruction completes, and turns off during the next END processing.
• Completion status indication device (d2)+1
This device turns on or off depending on the completion status of the SP.SLMPSND instruction.
When completed successfully: The device remains off.
When completed with an error: The device turns on during the END processing of the scan where the SP.SLMPSND instruction completes, and turns off during
the next END processing.
Ex.
Sending "Read (command: 0401H)" (reading in units of words) which reads the value in D100 to D102
●Request data
... ...
b15 b8b7 b0
(s2)+2 04H 01H
(s2)+3 00H 00H
(s2)+4 00H 64H
(s2)+5 A8H 00H
(s2)+6 00H 03H
●Response data
... ...
b15 b8b7 b0
(d1)+2 12 34
H H
(d1)+3 00 02
H H
(d1)+4 1D EF
H H
Subcommand
Command Head device No.
01H 04H 00H 00H 64H 00H
34 12 02 00 EF 1D
H H H H H H
D100 D101 D102
Device
No. of device
code
points
00H A8H 03H 00H
8 BUILT-IN ETHERNET FUNCTION INSTRUCTIONS
8.4 SLMP Frame Send Instruction
8
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