562
Appendix 5.5 Special Relay and Special Register
The Universal model QCPU does not support the use of the special relay and special register described in Page 562,
Appendix 5.5.1 and Page 565, Appendix 5.5.2.
Replace them using the method described in the table or delete the corresponding sections.
Appendix 5.5.1 Special relay list
The following table lists the special relay not supported by the Universal model QCPU and measures to be taken.
Number Name/Description Measures
SM80 CHK detection
The Universal model QCPU does not support the CHK
instruction. For the replacing method of the CHK
instruction, refer to Page 529, Appendix 5.3.3 (4).
SM91
Step transition monitoring timer start
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).
SM92
SM93
SM94
SM95
SM96
SM97
SM98
SM99
SM250 Largest mounted I/O number read
Operation of SD250 is not necessary. The Universal
model QCPU always stores the largest mounted I/O
number in SD250. Delete the corresponding sections.
SM255
MELSECNET/H
module 1
information
Indicates regular network or standby network.
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.
SM256
At refresh from link module to CPU, selects
whether to read data from the link module.
SM257
At refresh from CPU to link module, selects
whether to write data to the link module.
SM260
MELSECNET/H
module 2
information
Indicates regular network or standby network.
SM261
At refresh from link module to CPU, selects
whether to read data from the link module.
SM262
At refresh from CPU to link module, selects
whether to write data to the link module.
SM265
MELSECNET/H
module 3
information
Indicates regular network or standby network.
SM266
At refresh from link module to CPU, selects
whether to read data from the link module.
SM267
At refresh from CPU to link module, selects
whether to write data to the link module.
SM270
MELSECNET/H
module 4
information
Indicates regular network or standby network.
SM271
At refresh from link module to CPU, selects
whether to read data from the link module.
SM272
At refresh from CPU to link module, selects
whether to write data to the link module.
SM280 CC-Link error
Replace the relay with the I/O signals (Xn0, Xn1, and
XnF) of the mounted CC-Link module.
SM315 Communication reserved time delay enable/disable flag
Set a service processing time value in the PLC system
tab of the PLC parameter dialog box.
To Next Page
Loading...
Need help?
General
