Mitsubishi Electric MELSEC iQ-R-R00CPU - Appendix 8 Buffer Memory

APPX
Appendix 8 Buffer Memory
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Appendix 8 Buffer Memory
The buffer memory is memory used with the following applications.
The buffer memory content returns to its default status (initial value) when the CPU module is powered off or is reset.
List of buffer memory addresses
CPU module
The following table lists the CPU module buffer memory addresses.
■Ethernet function
For a list of buffer memory addresses as well as details relating to the Ethernet function, refer to the following.
( MELSEC iQ-R Ethernet User's Manual (Application))
■CC-Link IE Field Network Basic function
The following table lists buffer memory addresses relating to the CC-Link IE Field Network Basic function. (Programmable
controller CPU only) ( Page 894 Details on buffer memory addresses)
Module Application
CPU module Stores values such as Ethernet function setting values.
SIL2 function module and
safety function module
Stores the status of the SIL2 function module and safety function module (such as diagnostics information and system
information). ( Page 833 List of Special Register Areas)
Address Name Data stored
Un\G1024 Total number of connected stations The total number of connected stations set in parameter is stored.
Un\G1025 Reserved station specification status The reserved station specification status of the slave station specified in parameter is
stored.
Un\G1026 to
Un\G1029
Reserved station specification status
of each station
The reserved station specification status is stored.
Un\G1030 to
Un\G1032, Un\G1034
to Un\G1036,
Un\G1038 to
Un\G1040, Un\G1042
to Un\G1044
Link scan information The link scan time during cyclic transmission is stored.
Un\G1050 Diagnostic information display request When a station number (1 to 16) to be diagnosed is specified in 'Diagnostic request
information' (Un\G1051) and the bit 0 of 'Diagnostic information display request'
(Un\G1050) is turned off and on, the diagnostic information of the specified slave station is
stored in 'Diagnostic information 1' (Un\G1053 to Un\G1064) and 'Diagnostic information 2'
(Un\G1068 to Un\G1077).
Un\G1051 Diagnostic request information
Un\G1052 Diagnostic information status flag
Un\G1053 to
Un\G1064
Diagnostic information 1
Un\G1068 to
Un\G1077
Diagnostic information 2