Siemens Sinumerik 840D sl Programming Manual page 635

The system variables always contain the values of the previous IPO cycle.
$AN_IPO_ACT_LOAD
$AN_IPO_MAX_LOAD
$AN_IPO_MIN_LOAD
$AN_IPO_LOAD_PERCENT
$AN_SYNC_ACT_LOAD
$AN_SYNC_MAX_LOAD
$AN_SYNC_TO_IPO
$AC_SYNC_ACT_LOAD
$AC_SYNC_MAX_LOAD
$AC_SYNC_AVERAGE_LOAD average computing time for synchronized actions in the
$AN_SERVO_ACT_LOAD
$AN_SERVO_MAX_LOAD
$AN_SERVO_MIN_LOAD
Variable for the overload notification:
The machine data $MN_IPO_MAX_LOAD is used to set the net IPO computing time
(as % of IPO cycle) from which the system variable
$AN_IPO_LOAD_LIMIT will be set to TRUE. If the current load falls below this limit, the
variable is again set to FALSE. If the machine data is 0, the entire diagnostic function is
deactivated.
The evaluation of $AN_IPO_LOAD_LIMIT allows the user to define a strategy for avoiding a
level overflow.
Job planning
Programming Manual, 02/2011, 6FC5398-2BP40-1BA0
current IPO computing time (incl. synchronized actions of all
channels)
longest IPO computing time (incl. synchronized actions of all
channels)
shortest IPO computing time (incl. synchronized actions of
all channels)
current IPO computing time as percentage of IPO cycle (%)
current computing time for synchronized actions over all
channels
longest computing time for synchronized actions over all
channels
percentage share that the synchronized actions have of the
complete IPO computer time (over all channels)
current computing time for synchronized actions in the
channel
longest computing time for synchronized actions in the
channel
channel
current computing time of the position controller
longest computing time of the position controller
shortest computing time of the position controller
Motion synchronous actions
10.4 Actions in synchronized actions
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