Precautions For Using The Data Logging File Transfer Function - Mitsubishi MELSEC Q series User Manual

7.4.6

Precautions for using the data logging file transfer function

This section describes precautions for using the data logging file transfer function.
(1) Concurrent execution of another function
(a) Auto logging function
The data logging file transfer function cannot be performed during auto logging.
(b) Functions of a programming tool
If either of the following functions is executed from a programming tool during data logging file transfer, an error
may occur. An error also may occur in a standby data logging file and a data logging file during retry
processing.
• SD memory card formatting
• CPU module change function with SD memory card
(2) Sampling performance
When the data logging file transfer function is used, the sampling performance is degraded, compared when the
function is not used. Therefore, data missing may occur even if it did not occur when the data logging file transfer
function was not used. If data missing had occurred before the function is used, the frequency of data missing
may rise. ( Page 69, Section 6.7)
(3) IP address setting for Ethernet communication
In the data logging file transfer function, data logging files are transferred to the FTP server through built-in
Ethernet ports of the CPU module. Set "IP Address" in the "Built-in Ethernet Port Setting" tab using a
programming tool.
QnUCPU User's Manual (Communication via Built-in Ethernet Port)
MELSEC-L CPU Module User's Manual (Built-In Ethernet Function)
(4) Port numbers when the socket communication function is used
For the data logging file transfer function, own station port numbers, F000
communication. Do not specify F000
communication function (SP.SOCOPEN) during execution of the data logging file transfer function.
QnUCPU User's Manual (Communication via Built-in Ethernet Port)
MELSEC-L CPU Module User's Manual (Built-In Ethernet Function)
(5) Processing time of file transfer
Time taken to file transfer depends on a load placed on the Ethernet line (congestion of the line), operating status
of other communication functions, and system configuration.
90
to FFFE using the connection establishment instruction for the socket
H H
to FFFE , are used for FTP
H H