App - 2 App - 2
MELSEC-Q
PPENDI
App
Appendix-2 About Use of Programs from Previous Modules
Here, use of programs created for A1SE51S or AD51H-S3 is explained.
POINT
In the QD51 (-R24), there are no switches for mode settings or console and other
settings as in the previous modules (A1SD51S, etc.).
When the QD51 (-R24) is used, be sure to set the mode settings and console and
other settings in the GX Developer parameter setting screen shown below.
• "Intelligent Function Module Switch Settings" Screen
Appendix 2.1 About use of A1SD51S, AD51H-S3 programs
Here, use of programs created for the A1SD51S or the AD51H-S3 and incorporation of
the QD51 (-R24) in existing systems is explained.
Programs created in A1SD51S or the AD51H-S3 can be read as is.
However, the points shown below differ slightly, so exercise caution.
(1) Usable channels
Usable channels are as shown below.
AD51H-S3 A1SD51S QD51 QD51-R24
CH. 1 (RS-232)
CH. 2 (RS-232)
CH. 3 (RS-422/RS-485)
Channel
CH. 4 (Parallel)
: Can be used : Cannot be used.
(a) Use in the QD51
If used in the QD51, there is no CH. 3 (RS-422/485) or CH. 4 interface in
the QD51, so they cannot be used.
As for CH. 3 (RS-422/485), correct the BASIC program to another channel
or use the QD51 -R24.
CH. 4 (Parallel) cannot be used.
(b) Use in the QD51 (-R24)
If used in the QD51, there is no CH. 2 (RS-232) or CH. 4 interface in the
QD51, so they cannot be used.
As for CH. 2 (RS-232), correct the BASIC program to another channel or
use the QD51.
CH. 4 (Parallel) cannot be used.
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