1 FUNCTIONS AND CONFIGURATION
1.5 Communication specifications
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1.5
Communication specifications
Communication specifications of CC-Link IE Field Network Basic
*1 Reference response time refers to the time taken by the servo amplifier to return a response to the master station after receiving a
command from the master station.
*2 Calculate the link scan time as follows. Also, use the reference 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).
SLMP communication specifications
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 (recommended): 255.255.255.0
Message format
Page 24 CC-Link IE FIELD NETWORK BASIC PROTOCOL
Physical layer
100BASE-TX
Communication connector
RJ45, 1 port (CN1A)
Communication cable
CAT5e, shielded twisted pair (4 pair) straight cable
Network topology
Star
Communication speed
100 Mbps
Transmission distance between stations
Max. 100 m
Number of nodes
Max. 64 stations (max. number of connections per group: 16 stations)
Reference response time
(Link scan time/timeout time
10 ms
Function
Description
Communication protocol
UDP
Port No.
iQSS
No. 45237 (NodeSearch and IPAddressSet only)
UDP
No. 5010
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 (recommended): 255.255.255.0
Message format
Physical layer
100BASE-TX
Communication connector
RJ45, 1 port (CN1A)
Communication cable
CAT5e, shielded twisted pair (4 pair) straight cable
Network topology
Star
Communication speed
100 Mbps
Transmission distance between stations
Max. 100 m
Maximum number of connections
No limit