Ch Warning Output Upper/Lower Limit Values - Mitsubishi Electric Q64RD User Manual

3 SPECIFICATIONS
3.4.16 CH warning output upper/lower limit values (buffer memory address 86 to 101:
Un\G86 to 101)
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(1) Set the measurement temperature range (0.1
(2) The warning output range region can be set in four steps of the warning output
upper upper value, upper lower value, lower upper value and lower lower value.
(3) If the detected temperature value rises above the warning output upper upper limit
value or falls below the warning output lower lower limit value to fall within the
warning output range region, the warning output flag (buffer memory address 48:
Un\G48) and warning output signal (XD) give the warnings.
(4) When the temperature value falls below the warning output upper lower limit value
or rises above the warning output lower upper limit value to return to within the
temperature range, "0" is stored into the warning output flag (buffer memory
address 48: Un\G48) bit position corresponding to the channel number.
The Warning Output Signal (XD) turns off only when all channels return to within
the temperature range.
Warning
occurrence
Upper upper
limit value
Upper lower
limit value
Lower upper
limit value
Lower lower
limit value
(5) At power-on or reset, the minimum and maximum values of the measured
temperature range of the setting range set as the measurement range (set using
GX Developer) are stored.
The upper upper limit value is set to be equal to the upper lower limit value, and
the lower upper limit value equal to the lower lower limit value.
Setting
Setting mode Setting range
New JIS
Old JIS
(6) If the temperature range that may be set is not satisfied or the condition of lower
lower limit value ≤ lower upper limit value < upper lower limit value ≤ upper upper
limit value is not satisfied, an error occurs and the corresponding error code is
stored into the error code area (buffer memory address 19: Un\G19), and the
Error Occurred Signal (XF) turns on.
(7) If the lower upper limit value is equal to the upper lower limit value, an error does
not occur and the warning output is made invalid.
(8) The Operation Condition Setting Request (Y9) must be turned on/off to make the
setting valid.
Warning clear
Warning occurrence
Settings at Power-On or Reset
Lower lower Lower Upper
limit value limit value
0 -200000
1 -20000
2 -180000
3 -20000
MELSEC-Q
increments) on each channel.
Warning output range region
Warning output range outside region
Included
Warning clear
Time
Upper upper Upper lower
limit value limit value
850000
120000
600000
120000
Temperature Range
That May Be Set
-200000 to 850000
-20000 to 120000
-180000 to 600000
-20000 to 120000
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