Ethernet Function - Mitsubishi Electric MELSEC iQ-R-R00CPU User Manual

Ethernet function

The following is the list of special relay areas relating to the Ethernet function.
No. Name
SM1520 IP address storage area
write request
SM1521 IP address storage area
write error
SM1522 IP address storage area
clear request
SM1523 IP address storage area
clear request
SM1524 Initial processing successful
completion state
SM1525 Initial processing error
completion state
*1 This is the memory used by the system when the CPU module is executing functions.
*2 Ethernet function initial processing involves updating parameters set for data communication to Ethernet-equipped modules to enable
communication with external devices. Initial processing of Ethernet-equipped modules is performed by setting Ethernet parameters,
writing them to the CPU module, and then powering off and on or resetting the CPU module. Note that if Ethernet parameters are not
set, initial processing of Ethernet-equipped modules will be performed based on default parameters. (SM1524 (initial processing
successful completion status) turns on the moment initial processing is complete, and communication with external devices becomes
possible.)
CC-Link IE Field Network Basic function
The following is the list of special relay areas relating to the CC-Link IE Field Network Basic function.
No. Name
SM1536 Cyclic transmission status
SM1540 Data link status
*1 The CPU module where this function can be used supports these special relay areas.
APPX
826
Appendix 4 List of Special Relay Areas
Data stored Details
OffOn:Write request exists • When this relay is changed from off to on,
OnOff:Writing completed
• Once write to the IP address storage area
Off: No error This relay is turned to on when write to the
On: Error IP address storage area (system memory
failed, and off when it was successful.
OffOn:Clear request exists When this relay is changed from off to on,
OnOff:Storage area the IP address storage area (system
cleared memory
Once clear of the IP address storage area
(system memory
(regardless of whether it was successful or
not), this relay is turned off.
Off: No error This relay is turned to on when clear of the
On: Error IP address storage area (system memory
failed, and off when it was successful.
Off: Completed with an This relay is turned on when the initial
error processing for the Ethernet function was
On: Completed normally completed successfully.
processing was completed with an error,
SM1525 is turned on and SM1524 stays off.
Off: Completed normally This relay is turned on when the initial
On: Completed with an processing for the Ethernet function was
error completed with an error.
processing was completed successfully,
SM1524 is turned on and SM1525 stays off.
Data stored Details
Off: Not performed • This relay turns on when the cyclic
On: Being performed
• This relay is turned off when the cyclic
Off: All stations normal • This relay turns on when an error exists
On: One or more faulty
stations • The status of each slave station can be
IP address settings stored in SD1520 to
SD1525 are written to the IP address
*1
storage area (system memory ) of the
CPU module.
*1
(system memory ) is completed
(regardless of whether it was successful
or not), this relay is turned off.
*1
) is cleared.
*1
) is completed
*2
When the initial
*2
When the initial
transmission starts.
transmission stops.
even in one slave station.
checked in SD1540.
Set by (setting timing)
S (Status change)/U
S (Status change)
*1
)
S (Status change)/U
S (Status change)
*1
)
S (Status change)
S (Status change)
Set by (setting timing)
S (Status change)
S (Status change)
CPU
ALL
ALL
ALL
ALL
ALL
ALL
CPU
*1
Rn
*1
Rn