Program Comparisons; Comparison Of Link Special Relay (Sb)/Link Special Register (Sw) - Mitsubishi Electric MELSEC-A Series Manual

4
REPLACEMENT OF THE MELSECNET/10 (PLC TO PLC NETWORK)

4.6 Program Comparisons

4.6.1 Comparison of link special relay (SB)/link special register (SW)

The table below shows only link special relay (SB) and link special register (SW) to be used in interlock
program.
Device name and device No. of MELSECNET/H module are described in link device of internal
MELSECNET/H module.
Changing sequence program should be performed after checking the refreshed device of link device in
refresh parameters.
(1) AnN/AnA/AnSCPU (excluding AnUS(H)CPU)
When MELSECNET/10 module is mounted to the CPU module of the AnN/AnA/AnSCPU (excluding
AnUS(H)CPU), link special relay (SB) and link special register (SW) are assigned to special relay and
special register of CPU module.
For replacing with a MELSECNET/H module, change sequence program in reference to the following.
(a) Link special relay (SB)
AnN/AnA/AnSCPU
MELSECNET/10 module
Number Name
LRDP
M9204 instruction
complete
LWTP
M9205 instruction
complete
M9211 Module status
Online host
M9240
status
Forward loop
M9241
status
Reverse loop
M9242
status
Loopback
M9243
status
Data not
M9246 received
(Control station)
Parameter
M9250
unreceived
Communication
M9251
status
MELSECNET/H module
Description Number
OFF : Not completed
-
ON : Completed
OFF : Not completed
-
ON : Completed
OFF : Normal
SB0020 Module status
ON : Abnormal
OFF : Online
ON : Offline, self-
Online switch
loopback test, SB0043
(host station)
station-to-
station test
OFF : Normal
SB0090 Host loop status
ON : Abnormal
OFF : Normal
SB0090 Host loop status
ON : Abnormal
OFF : Loopback
inexecution
SB0090 Host loop status
ON : Loopback
execution
OFF : Received
-
ON : Not received
OFF : Received Parameter
SB0054
ON : Not received receive status
OFF : Normal Host data link
SB0049
ON : Abnormal status
: Compatible,
QCPU
Compat-
Name Description
- -
- -
OFF : Normal
ON : Abnormal
OFF : Online
ON : Other than
online
OFF : Normal
ON : Abnormal
OFF : Normal
ON : Abnormal
OFF : Normal
ON : Abnormal
- -
OFF : Receive
completed
ON : Unreceived
OFF : Normal
ON : Abnormal
: Partial change required, ×: Incompatible
Precautions for replacement
ibility
LRDP instruction cannot be used.
When using it in sequence
program, delete corresponding
part.
LWTP instruction cannot be used.
When using it in sequence
program, delete corresponding
part.
When SB0090 turns on, check
the loop condition with SW0090,
or check by host bit of SW0091 to
SW0094.
When SB0090 turns on, check
the loop condition with SW0090,
or check by host bit of SW0095 to
SW0098.
When SB0090 turns on, check
the loop condition with SW0090,
or check by SW0099 or SW009A.
When using it in sequence
program, delete corresponding
part.
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