Mitsubishi Electric MELSEC iQ-F FX5 User Manual page 473

CH1 Rate alarm lower limit value
Set a lower limit value of the change rate of digital operation values to detect a rate alarm.
For details on the alert output function, refer to the following.
Page 354 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 FX2N allocation mode
function)
■Setting range
The possible setting range is from -32768 to +32767.
Unit of the setting value differs 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 set to 0.
• 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 361 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.
When the 'CH1 Input type/range setting' (Un\G598) is set to resistance temperature detector or thermocouple, the setting of
'CH1 Input signal error detection setting' (Un\G528) is ignored.
■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 FX2N allocation
mode function)
CH1 CH2 CH3 CH4
526 726 926 1126
1231 1232 1233 1234
Unit
0.1%
digit
Setting content
Disable
Upper and lower limit detection
Lower limit detection
Upper limit detection
Simple disconnection detection
CH1 CH2 CH3 CH4
528 728 928 1128
1151 1152 1153 1154
CH5 CH6 CH7
1326 1526 1726
1235 1236 1237
CH5 CH6 CH7
1328 1528 1728
1155 1156 1157
APPX
Appendix 12 Buffer Memory Areas
CH8
1926
1238
A
CH8
1928
1158
471