Mitsubishi Electric MELSEC-Q series User Manual page 118

(19)CH1 Rate alarm upper limit value (Un\G126) to CH8 Rate alarm lower limit value
(Un\G141)
Set the change rate range of the digital output value for each channel.
For details on the warning output function (rate alarm), refer to the following.
• Warning Output Function (Rate Alarm) (
(a) Setting range
• Setting range: -32768 to 32767 (-3276.8 to 3276.7%/s) (Set in 0.1%/s)
To set the rate alarm upper limit value to 30%/s, store 300 in the buffer memory.
Ex.
• The range must satisfy the following condition: rate alarm upper limit value  rate alarm lower limit value.
In the channel where the condition is not satisfied, an error occurs. The error code (34) is stored in
Latest error code (Un\G19) and Error flag (XF) turns on. The rate alarm operates in the setting before the
error occurs.
(b) Enabling the setting
Turn on then off Operating condition setting request (Y9) to enable the setting.
(c) Default value
All channels are set to 0.
Since 0 is set as the default value, change the set value to use the rate alarm.
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Page 53, Section 4.10 (2))