Disconnection Detection Mode Setting (Buffer Memory Address 141: Un\G141); Disconnection Detection Setting Value (Buffer Memory Address 142, 143: Un\G142, Un\G143) - Mitsubishi Electric MELSEC Q Series User Manual

3 SPECIFICATIONS

3.4.19 Disconnection detection mode setting (buffer memory address 141: Un\G141)

3.4.20 Disconnection detection setting value (buffer memory address 142, 143: Un\G142,
Un\G143)
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(1) The disconnection detection mode is set by channels.
b15
U n\G 141
b8 to b15 information is fixed at 0.
Disconnection
detection mode
When the analog output value is lower than 1mA, the
Fixed
disconnection is detected.
When the analog output value is lower than the disconnection
detection set by CH
Arbitrarily setting
(buffer memory address 142, 143: Un\G142, Un\G143), the
disconnection is detected.
When the analog output value is lower than the disconnection
Auto setting detected value set automatically, the disconnection is
detected.
(2) To validate a value set to Disconnection detection mode setting, turn on and off
Operating condition setting request (Y9). (Refer to Section 3.3.2.)
(3) If other than 0 , 1
H
(4) The default is set in all-channel "0
(1) These are areas to set the disconnection detection values.
(2) The setting values are ranged from 0 to 250 (corresponds to 4 to 0mA). Set the
values in 0.1% increments.
Use the following formula to find the setting values from the current value to detect
the disconnection.
Disconnection detection value = 62.5
[Example]
Set "175" to detect the disconnection at the output monitor value of 1.2mA.
(3) To validate a value set to Disconnection detection setting value, turn on and off
Operating condition setting request (Y9). (Refer to Section 3.3.2.)
(4) If values out of the range from 0 to 250 are set, an error (Error code: 64 ) occurs.
(5) The default setting is "187" (or equivalent to 1mA).
b12 b11
to to
0 0
H H
Descriptions
Disconnection detection setting value
, 2 is set, an error (Error code: 63 ) occurs.
H H
" (fixed).
H
b8 b7 to b4
CH2
(4 – current value)
MELSEC-Q
b3 to b0
CH1
Set value
0
H
1
H
2
H
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