Appendix 3.5 Special Relay And Special Register - Mitsubishi Electric melsec q00ujcpu User Manual

Appendix 3.5
Special Relay and Special Register
The Universal model QCPU does not support the use of the special relay and special register described in Appendix
3.5.1 and Appendix 3.5.2.
Replace them using the method described in the table or delete the corresponding sections.
Appendix 3.5.1
TableApp.41 lists the special relay not supported in the Universal model QCPU and measures to be taken.
TableApp.45 Special relay not supported by the Universal model QCPU and measures
Number
SM80 CHK detection
SM91
SM92
SM93
SM94
SM95 Step transition monitoring timer start
SM96
SM97
SM98
SM99
SM250 Largest mounted I/O number read
SM255
MELSECNET/H
SM256
module 1
information
SM257
SM260
MELSECNET/H
SM261
module 2
information
SM262
SM265
MELSECNET/H
SM266
module 3
information
SM267
SM270
MELSECNET/H
SM271
module 4
information
SM272
Special relay list
Name/Description
Indicates operative network or standby network
At refresh from link module to CPU, selects
whether to read data from the link module.
At refresh from CPU to link module, selects
whether to write data to the link module.
Indicates operative network or standby network
At refresh from link module to CPU, selects
whether to read data from the link module.
At refresh from CPU to link module, selects
whether to write data to the link module.
Indicates operative network or standby network
At refresh from link module to CPU, selects
whether to read data from the link module.
At refresh from CPU to link module, selects
whether to write data to the link module.
Indicates operative network or standby network
At refresh from link module to CPU, selects
whether to read data from the link module.
At refresh from CPU to link module, selects
whether to write data to the link module.
Measures
The Universal model QCPU does not support the CHK
instruction. For the replacing method of the CHK
instruction, refer to Appendix 3.3.3.
The Universal model QCPU does not support the step
transition monitoring timer function. For the replacing
method of this function, refer to "Appendix 3.
Restrictions and replacing method of the Basic model
QCPU and Universal model QCPU" in the QCPU (Q
Mode)/QnACPU Programming Manual (SFC).
Operation of SD250 is not necessary. The Universal
model QCPU always stores the largest mounted I/O
number in SD250. Delete the corresponding sections.
These are special relays for the simple dual-structured
network function. Since the Universal model QCPU
does not support this function, there is no application for
these special relays. Delete the corresponding sections.
APPENDICES
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APPEN-
DIX
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