3. SLMP
3 - 1
3. SLMP
3.1 Summary
POINT
This servo amplifier does not support SLMP (TCP).
When commands are sent from multiple master stations to a servo amplifier at
short time intervals, the servo amplifier may fail to receive some of the
commands. When the servo amplifier does not respond to commands, lengthen
the interval of sending them.
SLMP (SeamLess Message Protocol) is a common protocol which enables seamless communication among
applications across the network. SLMP communications can be performed for external devices, such as a
programmable controller, a personal computer, and HMI, that can send and receive messages by using
SLMP control procedures. The MR-J4-_GF_(-RJ) servo amplifier is compatible only with the binary code. It
is not compatible with the ASCII code.
For the compatibility of SLMP with external devices, refer to manuals for external devices.
In SLMP, a command that a master station (external device) sends to slave stations (servo amplifiers) is
called a request message, and a command that the slave stations (servo amplifiers) send back to the master
station (external device) is called a response message.
When the servo amplifier receives the request message, it returns the response message to the external
device after the servo amplifier response time.
The external device cannot send the next request message until it completes receiving the response
message.
Master station (external device)
Slave station (servo amplifier)
Request
message
Request
message
Response
message
Servo amplifier response time (Note)
Response
message
Note. The servo amplifier response time differs depending on the command to be sent.
Summary of Contents for MR-J4-_GF
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Page 185: ...8 TROUBLESHOOTING AT POWER ON 8 2 MEMO ...
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