HEIDENHAIN iTNC 530 HSCI - Status Signals that Are Already Inactive During Control Power-Up

July 2013 6.11 Monitoring functions 923
Status signals that
are already inactive
during control
power-up
The handling of status signals from HEIDENHAIN power supply units, which
are already inactive during control start-up, varies depending on MP2195 bit 0:
MP2195 bit 0 = 0: Missing signals cannot be detected with Module 9066 and
do not result in an error message when the drive is switched on.
MP2195 bit 0 = 1: After the PLC program has been compiled, missing signals
can be detected with Module 9066 and trigger an error message when the
drive is switched on. Signals that are not provided by the power supply unit
must be suppressed with MP2195 (bit 1 to bit 6), because non-existent signals
are always identified as errors.
The SUPPLY.SPY table for the power supply modules contains the STATUS-
SIG column for the status signals of the power supply module. This column
informs you, among other things, whether the PF.PS.AC and PF.PS.DC is
supported by the power supply module. This information in SUPPLY.SPY is
evaluated by the CC 61xx.
Bits 7 and 8 of MP2195 enable you to deactivate the error messages that may
be triggered by the evaluation of these signals (PF.PS.AC, PF.PS.DC), without
changing the SUPPLY.SPY table.
Note
 Signals that change their status during operation are always identified as
errors.
 Errors of the supply module (e.g. excessive Uz or Uv temp.) now lead to
an NC stop (if M148 then LIFTOFF) with a subsequent emergency stop.