Chapter 1 Outline; Outline Of Slmp - Mitsubishi Electric MELSEC iQ-F Series FX5 User Manual

1
OUTLINE
This manual describes the method for reading or writing data in a CPU module with the data communication function of the
external equipment using SLMP.
When transferring data using SLMP, always refer to Page 11 SLMP DATA COMMUNICATION.
1.1

Outline of SLMP

SLMP is a protocol used for access from a CPU module or an external device (such as a personal computer or an HMI) to an
SLMP compatible device through Ethernet.
SLMP communications are available among devices that can transfer messages by SLMP.
The message format of 3E frame of SLMP is the same as that of the QnA compatible 3E frame of MC
protocol.
Therefore, external devices used with MC protocol can be connected to an SLMP compatible device directly.
For details on MC protocol, refer to the following manual.
• MELSEC-Q/L MELSEC Communication Protocol Reference Manual
Device data in a CPU module can be written or read from a personal computer or an HMI by using SLMP.
Writing and reading the device allows operation monitoring, data analyzing, and production managing of a CPU module by a
personal computer or an HMI.
In addition, external illegal access can be prevented by the remote password function.
Hub
SLMP communication
HMI
The following shows the flow for starting SLMP communication.
1.
Connect cables and external devices.
Configure the connection for the SLMP communication.
2.
Set parameters.
Set parameters with engineering tool.
3.
Write the set parameters to the CPU module.
Write set parameters to a CPU module. Validate the parameters by turning off to on or resetting the system.
CPU module
1 OUTLINE
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1.1 Outline of SLMP
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