Appendix 5.5 Special Relay And Special Register; Appendix 5.5.1 Special Relay List; Appendix 5.5 - Mitsubishi Electric Q01UCPU User Manual

Appendix 5.5

The Universal model QCPU does not support the use of the special relay and special register described in Page 555,
Appendix 5.5.1 and Page 558, Appendix 5.5.2.
Replace them using the method described in the table or delete the corresponding sections.
Appendix 5.5.1
The following table lists the special relay not supported by the Universal model QCPU and measures to be taken.
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
SM280 CC-Link error
SM315 Communication reserved time delay enable/disable flag
Special Relay and Special Register
Special relay list
Name/Description
Indicates regular 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 regular 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 regular 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 regular 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 Page 522, Appendix 5.3.3 (4).
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 on Basic Model QCPU, Universal Model
QCPU, and LCPU and Alternative Methods" in the
MELSEC-Q/L/QnA 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.
Replace the relay with the I/O signals (Xn0, Xn1, and
XnF) of the mounted CC-Link module.
Set a service processing time value in the PLC system
tab of the PLC parameter dialog box.
APPENDICES
A
555