Siemens SINUMERIK 840D sl Function Manual page 259

NCK-SPL data
$A_FRDP_SUBS[1...16]
$A_FRDP_ERR_REAC[1...16]
$A_INSE[65...192]
$A_OUTSE[65...192]
$A_INSI[65...192]
$A_OUTSI[65...192]
$A_MARKERSI[65...192]
$MN_PREVENT_SYNACT_LOCK
$MN_SAFE_SPL_STOP_MODE
$MN_SAFE_SPL_USER_DATA
If a difference is detected between the signals of both channels, this is indicated using Alarm
27090/27091 and the configured stop response (STOP D/E) is initiated if the SPL
commissioning phase has been defined to have been completed.
If the user attempts to acknowledge the initiated alarms and stop responses, without having
resolved the cause of the CDC error, then the stop response as well as the alarm are initiated
again.
To acknowledge a fault in the SPL-CDC, then the signal channel_1 reset (DB21.DBX7.7) must
be set for at least 100 ms. For PLC-controlled axes, the axis-specific reset must first be set up
via DB3x.DBX28.1 with a negative edge of the channel_1 reset.
The criterion "commissioning phase completed" is derived from the NCK-MD
$MN_PREVENT_SYNACT_LOCK[0,1] in the NCK. If one of the two field entries is not equal
to 0, "commissioning phase completed" is set by CDC internally. On the PLC side, this criterion
is entered using DB18.DBX36.0. If this bit is set to "1", then the commissioning phase is
considered to have been completed. An SPL-CDC error results in a stop response only after
the SPL commissioning phase has been completed.
The stop response for an SPL-CDC error is set in the NCK using NCK-MD
$MN_SPL_STOP_MODE. If the MD value is 3, for an SPL-CDC error, a STOP D is initiated -
for an MD value of 4, a STOP E is initiated. On the PLC side, this stop response is entered
using DB18.DBX36.1. If this bit is set to "1", for an SPL-CDC error, a STOP E is initiated -
otherwise a STOP D.
Any changes to data on the NCK and PLC side do not take effect until after power on.
Clearing the external SPL outputs for SPL system errors
If communication between NCK and PLC is interrupted with reference to the SPL-CDC, then
all external SPL output signals ($A_OUTSE/$A_OUTSEP) are cleared with a 5 s delay.
Safety Integrated
Function Manual, 12/2017, 6FC5397-4BP40-6BA1
Signal image of the PLC data
--
--
$A_INSEP[65...192]
$A_OUTSEP[65...192]
$A_INSIP[65...192]
$A_OUTSIP[65...192]
$A_MARKERSIP[65...192]
--
--
--
Connecting sensors and actuators
8.5 Safe programmable logic
PLC-SPL data (DB18)
DBW220, DBW232, DBW244
DBW578, DBW590, DBW602
--
DBW698, DBW710, DBW722
DBW222, DBW234, DBW246
DBW580, DBW592, DBW604
--
DBW700, DBW712, DBW724
DBX272.0 ...DBX287.7
DBX288.0 ...DBX303.7
DBX304.0 ...DBX319.7
DBX320.0 ...DBX335.7
DBX336.0 ...DBX351.7
DBD256, DBD260, DBD264,DBD268
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