Mitsubishi Electric Q03UDVCPU User Manual page 44

(3) Table exchange system
This method uses the network number, station number, and IP address set in the conversion table of the Station
No. <-> IP information, and uses the UDP port number predefined for the Ethernet system as the UDP port
number of the destination.
If duplicate network and station numbers are set in the conversion table, the data set with the younger registration
number is used. If all the required values are not set, communication may not be performed successfully.
When a request message (command frame) to access other station is received, the same network number and
station number are searched in the conversion table of the Station No. <-> IP information, and the request
message is sent to the partner station with the corresponding IP address.
The response message (response) for the request message is returned based on the return IP address and the
data in the conversion table above.
Specification example
Ex.
[2] Relay receiving station
Network No.
: 1
Station No.
: 12
IP Address : (192. 0. 1. 12)
Item
Network No., station
number
Setting value (Decimal)
IP Address
Item
Network No., station
number
Setting value (Decimal)
IP Address
Item
Network No., station
number
Setting value (Decimal)
IP Address
42
[1] Request source station
CPU
module
[3] Relay sending station
Network No.
CPU CPU
Station No.
module module
IP Address
Module setting details when accessing from CPU [1] to CPU [2]
[1] Request source
station *1
1, 12
Setting not necessary
192.0.1.12
Module setting details when accessing from CPU [1] to CPU [4]
[1] Request source [2] Relay receiving
station *1
1, 12 1, 11
192.0.1.12 192.0.1.11
Module setting details when accessing from CPU [2] to CPU [1]
[2] Request
[1] destination station
1, 11
Setting not necessary
192.0.1.11
Network No.
: 1
Station No.
: 11
IP Address
Ethernet (network No.1)
: 2
: 21
: (192. 0. 2. 21)
Ethernet (network No.2)
Network No.
CPU
Station No.
module
IP Address
[4] Request destination station
[2] [3]
Setting not necessary
[3] Relay sending
station *2 station *1
2, 22
192.0.2.22
[3]
*1
Setting not necessary
: (192. 0. 1. 11)
: 2
: 22
: (192. 0. 2. 22)
[4]
Setting not necessary
[4] Request
destination station
*2
2, 21
192.0.2.21
[4]
Setting not necessary