1. FUNCTIONS AND CONFIGURATION
1 - 5
1.3 Communication specifications
1.3.1 Communication specifications of CC-Link IE Field Network Basic
Function Description
Communication protocol UDP
Port No.
No. 61450 (cyclic data)
No. 61451 (NodeSearch and IPAddressSet dedicated for CC-Link IE Field Network Basic only)
Cyclic data 32 points (64 bytes)
IP address
IPv4 range: 0.0.0.1 to 223.255.255.254
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 chapter 2.
Physical layer 1000BASE-T
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
Number of nodes
Max. 64 stations (max. number of connections per group: 16 stations)
Number of usable stations: 1 station per MR-JE-_C servo amplifier
Standard response time
(Note 1)
(Link scan time/timeout time
(Note 2, 3))
10 ms
Note 1. Standard response time refers to the time from when the servo amplifier receives a command from the master station until
when it returns a response to the master station.
2. Calculate the link scan time as follows. Also, use the standard response time for Ns.
MELSEC iQ-R/MELSEC-Q/L: Ls = Ns + Nm
MELSEC iQ-F: Ls = SM + {(Ns + Nm)/SM}
Ls: Link scan time, Ns: Response time of slave station, Nm: Request time of master station, SM: Sequence scan time
3. Check the current link scan time (when all the slave stations are in a normal state) using the CC-Link IE Field Network Basic
diagnosis function. Then, set the timeout time approximately 5 times the link scan time (example: 50 ms when the current link
scan time is 10 ms).
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