Mitsubishi Electric MELSEC iQ-R Series Programming Manual page 149

■Engineering value inverse conversion
This function block converts an engineering value input from the A/D converter module into a value in percentage (%).
Inverse engineering value
conversion result (T2)
100(%)
0(%)
NMIN NMAX
T1-NMIN
T2 (%)= ×100(%)
NMAX-NMIN
T1: Input value
T2: Engineering value inverse conversion processing result (%)
NMAX: Input high limit
NMIN: Input low limit
■Digital filter
This function block performs digital filter processing to an input value.
Digital filter processing result = T2 +  (Last digital filter processing value - T2)
: Filter coefficient, T2: Engineering value inverse conversion processing result
■Disable alarm detection
This function block sets whether to detect alarms (ALM) or not in the range check.
Item
Disable alarm detection by setting tag data
Disable alarm detection by loop stop processing
■Hold processing
This function block sets whether to hold M+P_IN outputs or not when a sensor error (SEA) has occurred due to a high/low
limit range error in the range check.
The hold processing is set in the process control extended setting in the engineering tool.
[Options]  [Convert]  [Process Control Extension Setting]  [I/O Control]  [Holding Processing]
• "Yes" is selected for "Hold the output of M+P_IN"; Outputs are held.
• "No" is selected for "Hold the output of M+P_IN"; The operation continues.
■Loop stop processing
When the stop alarm (SPA) of the alarm (ALM) or the tag stop (TSTP) of the monitor output buffer (DOM) is TRUE, this
function block performs the following processing.
• Outputs (PVP) are held.
• The control mode is automatically switched to MANUAL.
• When SEA of the alarm (ALM) has occurred, the SEA is reset. When TSTP is TRUE, SPA is reset.
• Alarm detections are not performed in the range check.
Input value (T1)
Disable alarm detection processing
If the following bits in the disable alarm detection (INH) are TRUE, no SEA of
the alarm (ALM) will be detected.
• ERRI
• SEI
Page 147 Loop stop processing
9 I/O CONTROL
9.1 Analog Input Processing (M+P_IN)
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