1 FUNCTIONS
1.17 Q Compatible Mode Function
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1.17 Q Compatible Mode Function
This function allows setting the buffer memory addresses of the A/D converter module same as the buffer memory addresses
of the MELSEC-Q series.
This compatibility makes it possible to reuse sequence programs that have exhibited high performance on the MELSEC-Q
series modules.
The following table lists the compatible modules of the MELSEC-Q series.
The R60AD16-G does not support the Q compatible mode function.
Operation
Only the buffer memory assignment is changed in the Q compatible mode.
• The I/O signal assignment is the same as that of the R mode. Some signals have been changed. However, the signals that
change the module operation maintain the compatibility. Therefore, when a MELSEC-Q series sequence program is
diverted, a significant modification of the sequence program is not required. The following table shows a difference between
the R60AD8-G and Q68AD-G.
• When a MELSEC-Q series sequence program is diverted, check digital output values and the operation
timing and modify the sequence program if necessary because the specifications such as the resolution and
update timing are changed.
• When a MELSEC-Q series sequence program is diverted and an error code is set as the operating
condition or interlock condition, the program does not operate normally.
• When the Q compatible mode function is enabled, a program that uses FB or labels cannot be created.
When FB or labels is used, create a program in the R mode.
Setting procedure
1. When adding a new module, select the module whose module name has "(Q)" at the end.
[Navigation window] [Parameter] [Module Information] Right-click [Add New Module]
2. Configure the same parameter setting as the one of when the R mode is used.
3. Restart the CPU module after the module parameter is written.
• During the module operation, the mode cannot be switched between the R mode and Q compatible mode.
• The project of the compatible A/D converter module created by GX Works2 can be read with the other
format read function of GX Works3. The read project keeps various settings of the compatible A/D converter
module as the settings of the A/D converter module of the MELSEC iQ-R series. The settings to be kept are
the switch setting, parameter setting, auto refresh setting, and I/O assignment setting.
A/D converter module of the MELSEC iQ-R series Compatible A/D converter module
R60AD8-G Q68AD-G
Device number R60AD8-G Q68AD-G
X7 Use prohibited High resolution mode status flag
(ON: High resolution mode, OFF: Normal
resolution mode)
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