2. CC-Link IE Field Network Basic/SLMP
2 - 3
2.2.2 SLMP communication specifications
Function
Description
Communication protocol
UDP/TCP (Note)
Port No.
iQSS
No. 45237 (NodeSearch and IPAddressSet only)
UDP
No. 5010
TCP
(Note) No. 5012
IP address
IPv4 range: 0.0.0.0 to 255.255.255.255
Use the same network address for both the master and slave stations.
Default value: 192.168.3.0
Subnet mask
Default value: 255.255.255.0
Message format
Refer to section 2.4.2.
Physical layer
100BASE-TX
Communication connector
RJ45, 1 port (CN1)
Communication cable
CAT5e, shielded twisted pair (4 pair) straight cable
Network topology
Star
Variable communication
speed
100 Mbps
Transmission speed between
stations
Max. 100 m
Maximum number
of connections
UDP
No limit
TCP
(Note) 1
Note. TCP is supported by servo amplifiers with software version A3 or later.
2.3 Outline of CC-Link IE Field Network Basic protocol
In CC-Link IE Field Network Basic, a command that a master station (controller) 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 (controller) is called a response message.
The master station (controller) sends the request message using the directed broadcast to all slave stations
(servo amplifiers). When the servo amplifier receives the request message, it acquires data for own station
and returns the response message to the master station (controller) using the unicast after the servo
amplifier response time. The servo amplifier response time differs depending on the command to send.
Use link devices (RWr, RWw, RX, and RY) for data communications. Sending and receiving the request
message and response message at a constant cycle allow the master station (controller) to perform link
refresh.
The servo amplifier reads the received data as an object dictionary to drive a servo motor and return monitor
data.
Master station
(controller)
Constant cycle
Request message (directed broadcast)
Response message (unicast)
Slave station
(servo amplifier)
Summary of Contents for MR-JE-C Series
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