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MELSEC-Q
APPENDIX
APPENDIX
Appendix 1 Functional Improvements of the Q Series C24
The Q series C24 of function version B has several functions that have been added or
changed from the conventional product (function version A).
This chapter explains a comparison of the functions of Q series C24/GX Configurator-
SC accompanied by the change/addition of functions, and explains how to utilize
programs created for function version A as well as how to incorporate function version
B modules into the existing system.
Appendix 1.1 Comparison of the Functions of Q Series C24/GX Configurator-SC
(1) Comparison of the functions of Q series C24
The following table shows the functions of Q series C24.
Q series C24
(function version)
QJ71C24N
(-R2/R4)
QJ71C24
(-R2)
Function
BBA
Communication using the MC protocol
Communication with QnA compatible 2C/3C/4C frame
Communication with ASCII code
Communication with A compatible 1C frame
Formats 1 to 4
exist for each.
Communication with binary code Communication with QnA compatible 4C frame Format 5
Batch read/write in bit/word units
Monitoring of device memory
Batch read/write of multiple blocks
Read/write by extension designation
Read/write of device memory
Accessing other stations via network system
Reading/writing from/to the buffer memory of the Q series C24
Reading/writing from/to the buffer memory of intelligent function modules
Reading/writing from/to sequence program files
Monitoring the PLC CPUs (PLC CPU monitoring function)
Transmission of the monitoring information using the modem function.
Status control of the PLC CPUs (remote RUN/STOP, etc.)
Turning on/off input signals of the Q series C24 from an external device (global function)
Data transmission from a PLC CPU to an external device (on-demand function)
Communication using non-procedure protocol
Data transmission/reception in any format
Data transmission/reception using user frames
Data reception using format-0 (
2
)
Data reception using format-1
Data reception by interrupt programs
Monitoring the PLC CPUs (PLC CPU monitoring function)
Transmission of the monitoring information using the modem function.
ASCII data transmission/reception by ASCII-BIN conversion
Data transmission/reception by specifying transparent code
Specification of Receive transparent code
Specification of Transmission transparent 1st (
3
)
Multiple specification of Transmission transparent 2nd to 10th
Reception data clear by dedicated instruction (CSET instruction)
App.