Mitsubishi Electronics fx3u (6) Existence confirmation (connection numbers 1, 2; BFM#32, 33 b1), (7) Local station Port No. (connection numbers 1, 2; BFM#40, 47), (8) Destination IP address (connection numbers 1, 2; BFM#41 to 42, 48 to 49)

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MELSEC-F
COMMUNICATION PROCEDURE5
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(6) Existence confirmation
(connection numbers 1, 2; BFM#32, 33 b1)
(a) This setting selects whether or not the Ethernet module should confirm that
an external device still operates normally when there is no communication
for a fixed period of time. The open processing for the connection with the
external device must have been completed.
(b) When an error occurs in the existence confirmation, the Ethernet module
performs the following processing.
• Forcibly closes the line and stores the error information in the error log
area (BFM#227 to 511) of the buffer memory.
• Turns off the open completion signal (BFM#20480) and stores the open
error code in BFM#124, 134.
(c) If the external device will be changed while a UDP/IP connection is open,
"No confirm" should be selected.
If "Confirm" is selected, the Ethernet module will confirm the existence of the
first destination after the UDP/IP connection is opened. Existence
confirmation is not performed for the changed destination, i.e. the newly
selected external device.
(7) Local station Port No.
(connection numbers 1, 2; BFM#40, 47)
(a) In this item the port number of each connection for the Ethernet module is
set.
(b) The setting values are designated in the range from 1025 to 5548 and from
5552 to 65534. Set port numbers that are not already used by other ports.
(c) Set the port numbers for the Ethernet module upon consulting a network
administrator.
(8) Destination IP address
(connection numbers 1, 2; BFM#41 to 42, 48 to 49)
(a) Set the IP addresses (two words) for external devices in the chosen input
format.
(b) The IP addresses of external devices must be given values other than 0H,
FFFFFFFFH.
(c) Set the IP addresses of external devices upon consulting a network
administrator.
Name of setting Description of setting
No confirm Do not confirm the existence of the external device.
Confirm
Confirm the existence of the external device.
For details on the settings of the existence confirmation time and others, see Section 5.2,
"Initial Settings".