Mitsubishi Electric FX5 User Manual page 45

Number of connectable units
Up to 8 external devices can access one CPU module at the same time (including socket communication, MELSOFT
*1
connections , and SLMP).
*1 The first device for MELSOFT connection is not included.
Connection of user application
and other device(SLMP)
Target
device (Client)
Maintenance
GX Works3, etc. (MELSOFT connection)
For connections with external devices by SLMP, the number of possible simultaneous connections is the number of devices
configured in the Ethernet configuration settings only.
Port number
Host station port number, 1 to 1023 (0001H to 03FFH), are assigned for reserved port numbers (WELL KNOWN PORT
NUMBERS) and 61440 to 65534 (F000H to FFFEH) are for other communication functions. Therefore, using 1024 to 5548,
5570 to 61439 (0400H to 15ACH, 15C2H to EFFFH) is recommended.
Data communication frames
The frames that can be used on the CPU module are the same as MC protocol QnA-compatible 3E frames.
Access range
• Only the connected CPU module can be accessed. Transmissions to other modules will result in an error.
• Communication with other stations such as CC-Link via the connected CPU module cannot be done.
For details of the access range, refer to the MELSEC iQ-F FX5 User's Manual (SLMP).
Precautions when the protocol is set to UDP
• For a single UDP port, if a new request message is sent while waiting for the response message after sending the first
request message, the new request message will be discarded.
• When the same local port number has been set multiple times in UDP, the result is the same as if only one has been set. If
you want to communicate with multiple external devices using the same local port number, use TCP.
MELSOFT connection
FX5 CPU
5 SLMP FUNCTION
43
5.5 Precautions
5