Mitsubishi Electric MELSEC iQ-R Series, Programming Manual

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21 A/D CONVERSION INSTRUCTIONS
21.1 Switching the Mode
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Applicable devices
*1 FD cannot be used.
Processing details
These instructions switch the mode of an analog module.
• Normal mode (Normal output mode)

Offset/gain setting mode (The offset/gain setting mode status flag (XA) turns on.)
• Offset/gain setting mode

Normal mode (Normal output mode) (The offset/gain setting mode status flag (XA) turns off.)
• When the mode shifts from normal or normal output to offset/gain setting, Module Ready (X0) changes on to
off.
• When the mode shifts from offset/gain setting to normal or normal output, Module Ready (X0) changes off to
on. If a program exists that performs initial setting with Module Ready (X0) on, note that initial setting
processing will be executed.
• When the mode shifts from offset/gain setting to normal on the A/D converter module and temperature input
module, it automatically resumes the operation with the previous operating conditions.
• When the D/A converter module shifts from the offset/gain setting mode to the normal mode (normal output
mode), all channels enter in the D/A conversion disabled state. To resume D/A conversion, set "0" (D/A
conversion enabled) in "CH
 D/A conversion enabled/disabled setting" of the appropriate channel before
turning on and off Operating condition setting request (Y9).
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Program example
The following figure shows an example of a program which uses the G(P).OFFGAN instruction with the R60AD4.
• Program content
• Label setting
Operand Bit Word Double word Indirect
specification
Constant Others
(U)
X, Y, M, L,
SM, F, B, SB,
FX, FY J  \  T, ST, C, D, W,
SD, SW, FD, R,
ZR, RD U  \G  , J  \  ,
U3E  \(H)G 
Z LT,
LST,
LC LZ K, H E $
(U)
           
(s)
  
*1
        
Description
When "Mode Shift Request" (M10) is turned on, the A/D converter module mounted at the position of I/O numbers X/Y10 to X/Y1F shifts to the offset/gain
setting mode.
When "Mode Shift Request" (M10) is turned off, the module returns to the normal mode.
Classification Label name Description Device
Module label R60AD_1.bOffsetGainSettingModeFlag Offset/gain setting mode status flag X1A
Label to be defined Define the global label as shown below.