Bfm #83: Set Value Backup Command - Mitsubishi Electric MELSEC FX2N-2LC User Manual

FX2N-2LC Temperature Control Block
7.2.42

BFM #83: Set value backup command

BFM #83 writes the values set to BFM #12 to BFM #29 and BFM #32 to BFM #81 to the
EEPROM built in the FX
When the power is turned on, the FX
buffer memories and use the data as the set values for temperature control. When the set val-
ues are backed up (written to the EEPROM) once, BFM #12 to BFM #29 and BFM #32 to BFM
#81 do not have to be set at the next time and later. As a result, as soon as control starts (BFM
#11), temperature control is enabled.
(At the time of shipment, the EEPROM stores the initial values.)
Set value backup
command
Set values are being
backed up.
Set value backup error
Description on operation
1) When the set value backup command turns on, the FX
flag.
2) When backup of the set values is completed, the set value backup flag turns off. When this
flag turns off, turn off the set value backup command.
3) If the set value backup command turns off while the set values are being backed up, the set
value backup error turns on. In such a case, normally back up the set values again.
If the power is turned off and on while a backup error is present, each data is reset to the ini-
tial value.
4) While a set value range error (BFM #0 b1) is present, the set values are not backed up.
-2LC.
2N
-2LC transfers the data stored in the EEPROM to the
2N
Buffer Memory (BFM) 7
-2LC turns on the set value backup
2N
7-29
7