Mitsubishi Electric MELSEC iQ-R02CPU - Details of Buffer Memory Addresses (CPU Module (Built-In Ethernet Port Part))

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APPX
Appendix 3 Buffer Memory
Details of buffer memory addresses (CPU module (built-in
Ethernet port part))
This section descries the details of buffer memory addresses of the CPU module (built-in Ethernet port part).
Own node setting status storage area
■Network number/Station number setting status (Un\G87)
This area is used for storing the setting status of the network number/station number.
Communication load status
■Receive packet count per unit time (one second) (Un\G100, Un\G101)
The number of receive packets per unit time (one second) of the built-in Ethernet port communications is stored.
■Send packet count per unit time (one second) (Un\G102, Un\G103)
The number of send packets per unit time (one second) of the built-in Ethernet port communications is stored.
Address Name Description
Un\G87 Network number/Station number setting status Stores the setting status of the network number/station
number that has been set with parameters or by the IP
address change function.
b0: Network number/station number validity flag (0: Disabled,
1: Enabled)
Address Name Description
Un\G100 Receive packet count (current) per unit time (one
second)
■The number of receive packets per unit time (one second) of
the built-in Ethernet port is stored.
■When the processing speed of the built-in Ethernet
communications is slow and if this value is large, the following
actions may improve the processing speed.
• Review the communication request from the engineering
tool and GOT.
• Review the communication request from the transfer
destination (execution source) of the simple CPU
communications.
• Review the file transfer function (FTP server).
• Review the communications using the SLMP.
Un\G101 Receive packet count (maximum) per unit time (one
second)
The maximum value of the number of receive packets per unit
time (one second) of the built-in Ethernet port is stored.
Address Name Description
Un\G102 Send packet count (current) per unit time (one second) ■The number of send packets per unit time (one second) of
the built-in Ethernet port is stored.
■When the processing speed of the built-in Ethernet
communications is slow and if this value is large, the following
actions may improve the processing speed.
• Review the execution frequency of the instructions for the
built-in Ethernet function (socket communications
instruction/predefined protocol support function instruction/
SLMP frame send instruction/file transfer function
instruction)
• Review the settings (such as the number of points) of CC-
Link IE Field Network Basic.
• Review the settings (such as the execution interval and the
number of points) of the simple CPU communications.
• Review the settings (such as automatic detection and
backup execution) of iQSS (built-in Ethernet).
• Review the settings (such as the number of executions) of
data logging file transfer.
Un\G103 Send packet count (maximum) per unit time (one second) The maximum value of the number of send packets per unit
time (one second) of the built-in Ethernet port is stored.