App - 2 App - 2
MELSEC-Q
APPENDIX
App
Appendix 1.3 Precautions when replacing the function version A module with function
version B
(1) Incorporation into an existing system
Wiring used for function version A can be incorporated as is in the function
version B D/A conversion module.
(2) Program utilization
A program created for function version A can be used as is with the function
version B D/A conversion module.
(3) Switch setting for Intelligent function module
Setting of the offset/gain setting mode differs from function version A to function
version B.
Perform the offset/gain settings after checking the RUN LED flashes in
offset/gain setting mode. If the RUN LED does not flash, check to see if the
switch 4 setting is correct.
(See Section 4.5 for intelligent function module switch settings for function
version B).
<Contents of switch 4 setting for function version A>
H
00
H
: Normal mode (non-synchronized)
01
H
to FF
H
: Synchronized output mode
00
H
: Normal mode (D/A conversion processing)
01
H
to FF
H
: Offset/gain setting mode
(4) Analog output during PLC CPU STOP
If the CH. output enable/disable flag (Y1 to Y8) is forced ON (enabled) in the
function version B D/A conversion module, the D/A converted value may be
output in some cases.
See Section 3.2.3 for details.