Mitsubishi Electric MELSEC iQ-R User Manual page 226

CH1 Rate alarm lower limit value
Medium speed
For rate alarm, the digital output value is checked at every warning detection cycle and the change rate is calculated from the
check result. Use this area to set a lower limit value of the change rate of digital output values for each channel.
For details on the warning output function (rate alarm), refer to the following.
Page 55 Rate alarm
■Buffer memory address
The following shows the buffer memory address of this area.
Buffer memory name
CH Rate alarm lower limit value
■Setting range
The setting range is from -32768 to 32767 (-3276.8 to 3276.7%). (Set it in increments of 0.1%.)
■Enabling the setting
Turn on and off 'Operating condition setting request' (Y9).
■Default value
The default value is 0 for all channels.
• When using rate alarms, configure the 2-step settings of the rate alarm upper limit value and lower limit
value.
• In the channel where a set value satisfies the condition the "rate alarm lower limit value  the rate alarm
upper limit value", a rate alarm upper/lower limit setting value inversion error (error code: 1BAH) occurs.
• Since the default value is 0, change the value.
CH1 Input signal error detection setting
Medium speed
Set a condition for detecting an input signal error.
For details on the input signal error detection function, refer to the following.
Page 60 Input Signal Error Detection Function
Setting value
0
1
2
3
4
If a value other than the above is set, an input signal error detection setting range error (error code: 1C0H) occurs. If Simple
disconnection detection (4) is selected for the channel where the set input range is other than the extended mode, a
disconnection detection enabled range setting range error (error code: 1C6H) occurs.
■Buffer memory address
The following shows the buffer memory address of this area.
Buffer memory name
CH Input signal error detection setting
■Enabling the setting
Turn on and off 'Operating condition setting request' (Y9).
APPX
224
Appendix 3 Buffer Memory Areas
Low speed
Simultaneous
Low speed
conversion
CH1 CH2
526 726
Synchronization
Setting details
Disable
Upper and lower limit detection
Lower limit detection
Upper limit detection
Simple disconnection detection
CH1 CH2
528 728
CH3 CH4
926 1126
CH3 CH4
928 1128