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212
APPX
Appendix 5 Special Relay List
System information
The special relays for system information are as follows.
*1 These devices are used as an interlock to access the CPU No.1 when the multiple CPU synchronization setting is configured with
asynchronous mode.
Firmware update function
The special relays for the firmware update function are as follows.
CC-Link IE Field Network Basic function
The special relays related to the CC-Link IE Field Network Basic function are as follows.
No.
Name
Content
Details
Set by (when to set)
SM220
CPU No.1 preparation
completed
OFF: CPU No.1
preparation not
completed
ON: CPU No.1
preparation completed
This device turns ON when the access from another CPU
module to the CPU No.1 is enabled after turning the
power ON or resetting the module.
S (status change)
SM221
CPU No.2 preparation
completed
OFF: CPU No.2
preparation not
completed
ON: CPU No.2
preparation completed
This device turns ON when the access from another CPU
module to the CPU No.2 is enabled after turning the
power ON or resetting the module.
S (status change)
SM222
CPU No.3 preparation
completed
OFF: CPU No.3
preparation not
completed
ON: CPU No.3
preparation completed
This device turns ON when the access from another CPU
module to the CPU No.3 is enabled after turning the
power ON or resetting the module.
S (status change)
SM223
CPU No.4 preparation
completed
OFF: CPU No.4
preparation not
completed
ON: CPU No.4
preparation completed
This device turns ON when the access from another CPU
module to the CPU No.4 is enabled after turning the
power ON or resetting the module.
S (status change)
No.
Name
Content
Details
Set by (when to set)
SM922
Firmware update
completion with/without an
error
OFF: Update completed
without an error (including
successful completion)
ON: Update completed
with an error
This device turns ON when the firmware update function
is completed with an error. (SM922 turns ON when 'Latest
firmware update result' (SD922) is in the range from
'100H' to '300H'.)
S (initial)
No.
Name
Content
Details
Set by (when to set)
SM1536
Cyclic transmission status
OFF: Transmission not
executed
ON: Transmitting
This device turns ON when cyclic transmission is started,
and turns OFF when the cyclic transmission is stopped.
S (END processing)
SM1540
Data link status
OFF: No error station
ON: Error station found
This device turns ON when an error occurs in one or more
slave stations.
The status of each slave station can be checked with
'Data link status of each station' (SD1540).
S (END processing)
Summary of Contents for MELSEC iQ-R C R12CCPU-V
Page 1: ...MELSEC iQ R C Controller Module User s Manual Application R12CCPU V ...
Page 2: ......
Page 23: ...1 EXECUTING PROGRAMS 1 3 I O Access Timing 21 1 MEMO ...
Page 32: ...30 3 MEMORY CONFIGURATION OF C Controller Module 3 4 Files MEMO ...
Page 257: ...I 255 MEMO ...
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