Mitsubishi Electric MELSEC iQ-F FX5 User Manual page 163

CH1 Rate alarm lower limit value
Set a lower limit value of the change rate of digital output values to detect a rate alarm.
For details on the alert output function, refer to the following.
Page 46 Alert output function
■Buffer memory address
The following shows the buffer memory address of this area.
Buffer memory name
CH Rate alarm lower limit value
CH Rate alarm lower limit value (In FX3
allocation mode function)
■Setting range
The possible setting range is from -32768 to +32767.
Unit of the setting value varies depending on the setting of 'Rate alarm change rate selection' (Un\G299).
Rate alarm change rate selection (Un\G299)
Rate specification (0)
Digital output value specification (1)
■Enabling the setting
Turn offonoff 'Operating condition setting request' (Un\G70, b9) to enable the setting.
■Default value
The default value is 0 for all channels.
• When using the rate alarm, configure the 2-step settings for the rate alarm upper limit value and lower limit
value.
• A channel where the set values satisfy the condition "Rate alarm lower limit value  Rate alarm upper limit
value" causes a rate alarm upper/lower limit setting value inversion error (error code: 1BAH).
• Since the default value is 0, change the setting value.
CH1 Input signal error detection setting
Set a condition for detecting an input signal error.
For details on the input signal error detection function, refer to the following.
Page 53 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 input range setting is other than 4 to 20 mA and 1
to 5 V, 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
CH Input signal error detection setting (In FX3
allocation mode function)
CH1 CH2
526 726
1231 1232
Unit
0.1%
digit
Setting content
Disable
Upper and lower limit detection
Lower limit detection
Upper limit detection
Simple disconnection detection
CH1 CH2
528 728
1151 1152
CH3 CH4
926 1126
1233 1234
CH3 CH4
928 1128
1153 1154
Appendix 4 Buffer Memory Areas
A
APPX
161