Mitsubishi q64rd User Manual page 35

3 SPECIFICATIONS
Device No. Signal Name
Offset/Gain Setting
XA
Mode Status Flag
Disconnection
XC
Detection Signal
Warning Output
XD
Signal
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[In offset/gain setting mode]
(1) This signal is used as an interlock condition to turn on/off the User Range Write
Request (YA) when the value at adjusted according to the offset/gain setting is
stored.
(2) See Section 4.6 for the offset/gain settings.
Module Ready (X0)
Offset/Gain Setting Mode
Status Flag (XA)
User Range Write Request (YA)
[In normal mode]
(1) This signal is used as an interlock condition to turn on/off the User Range Write
Request (YA) when the user range is restored.
(2) Refer to Chapter 7 for the user range restoration.
Module Ready (X0)
Offset/Gain Setting Mode
Status Flag (XA)
User Range Write Request (YA)
(1) The input circuit for the platinum RTD of the conversion-enabled channel turns ON the
Disconnection Detection Signal (XC) when any input signal line including the platinum RTD is
disconnected.
For the channel where disconnection is detected, a value based on the Conversion setting for
disconnection detection (buffer memory address 148: Un\G148) is stored in the CH
measured temperature value (buffer memory addresses 11 to 14, 54 to 61: Un\G11 to 14,
Un\G54 to 61).
Conversion of the channels not disconnected is continued.
(2) For temperature conversion values to be stored when the Disconnection Detection Signal (XC)
turns ON, any of "Value immediately before disconnection", "Up scale (maximum value of
measured temperature range + 5% of measured temperature range)", "Down scale (minimum
value of measured temperature range – 5% of measured temperature range)" or "Given value"
can be selected. (Refer to Section 3.2.2.)
(3) Removing the cause of disconnection and turning ON the Error Clear Request (YF) turns OFF
the Disconnection Detection Signal (XC).
(4) When the line connection is recovered, the temperature conversion value update is restarted
independently of the Disconnection Detection Signal (XC) reset.
(1) This signal turns on when the measured temperature value has fallen out of the temperature
range set in the warning output upper/lower limit values (buffer memory addresses 86 to 117:
Un\G86 to 117) on any of the conversion-enabled channels.
(2) This signal turns off automatically as soon as the measured temperature values returned to
within the ranges on conversion-enabled all channel.
Description
OFF
ON
MELSEC-Q
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