Bfm#209 To #212][Bfm#215 To #218][Bfm#221 To #224][Bfm#227 To #230] Alarm Mode Setting 1 To 4 - Mitsubishi Electric MELSEC FX Series User Manual

FX -4LC User's Manual
3U
8.2.53 [BFM#209 to #212][BFM#215 to #218][BFM#221 to #224][BFM#227 to #230]
Alarm mode setting 1 to 4
The 4LC is equipped with 14 types of alarms. Four types of alarms (alarm 1 to alarm 4) are available in each
channel in accordance with the application.
Set the alarm type by writing the alarm mode (0 to 14) to the alarm mode setting buffer memories for alarms 1
to 4 (each channel).
Values of alarms 1 to 4 can be set using the alarm set value buffer memories, and the alarm status can be
checked in the status of alarm bits (b4 to b7) for alarms 1 to 4 of the event buffer memory.
BFM No.
CH1 CH2 CH3 CH4
Alarm 1 mode setting
#209 #215 #221 #227 Setting range : 0 to 14 (Refer to the following)
Alarm 2 mode setting
#210 #216 #222 #228 Setting range : 0 to 14 (Refer to the following)
Alarm 3 mode setting
#211 #217 #223 #229 Setting range : 0 to 14 (Refer to the following)
Alarm 4 mode setting
#212 #218 #224 #230 Setting range : 0 to 14 (Refer to the following)
*1. These buffer memories can be written only while control is stopped.
Alarm mode (0 to 14)
Alarm
Alarm type
mode
0 Alarm function OFF
1 Upper limit input value alarm
2 Lower limit input value alarm
3 Upper limit deviation alarm
4 Lower limit deviation alarm
5 Upper/lower limit deviation
6 Range alarm
Upper limit input value alarm with
7
wait
Lower limit input value alarm with
8
wait
Upper limit deviation value alarm
9
with wait
Lower limit deviation value alarm
10
with wait
Upper/lower limit deviation value
11
alarm with wait
Upper limit deviation value alarm
12
with re-wait
Lower limit deviation value alarm
13
with re-wait
→ For details on the alarm function, refer to Chapter 7.
→ For details on the event, refer to Subsection 8.2.2.
→ For details on the alarm setting value, refer to Subsection 8.2.16.
Description
Alarm function is disabled.
When measured value (PV) is more than alarm set value, an alarm is issued.
When measured value (PV) is less than alarm set value, an alarm is issued.
When deviation (= Measured value (PV) - Set value (SV)) is more than alarm set
value, an alarm is issued.
When deviation (= Measured value (PV) - Set value (SV)) is less than alarm set
value, an alarm is issued.
When absolute deviation (= Measured value (PV) - Set value (SV)) is more than
alarm set value, an alarm is issued.
When absolute deviation (= Measured value (PV) - Set value (SV)) is less than
alarm set value, an alarm is issued.
When measured value (PV) is more than alarm set value, an alarm is issued.
However, when control is started the measured value is ignored.
When measured value (PV) is less than alarm set value, an alarm is issued.
However, when control is started the measured value is ignored.
When deviation (= Measured value (PV) - Set value (SV)) is more than alarm set
value, an alarm is issued.
However, when control is started the measured value is ignored.
When deviation (= Measured value (PV) - Set value (SV)) is less than alarm set
value, an alarm is issued.
However, when control is started the measured value is ignored.
When absolute deviation (= Measured value (PV) - Set value (SV)) is more than
alarm set value, an alarm is issued.
However, when control is started the measured value is ignored.
When deviation (= Measured value (PV) - Set value (SV)) is more than alarm set
value, an alarm is issued.
However, when control is started and when set value is changed the measured
value is ignored.
When deviation (= Measured value (PV) - Set value (SV)) is less than alarm set
value, an alarm is issued.
However, when control is started and when set value is changed the measured
value is ignored.
8.2 Buffer Memory Details
Initial
value
0
0
0
0
Description
8 Buffer Memory
1
2
3
R/W Backup
*1
R/W
4
*1
R/W
*1
R/W
*1
R/W
5
6
7
8
9
10
111