Siemens SINUMERIK 840D sl Function Manual page 285

System variable Meaning
$A_MARKERSI[n] Marker
$A_MARKERSID[n] Marker
$A_MARKERSIP[n] Image of the PLC-SPL
markers
$A_MARKER‐ Image of the PLC mark‐
SIPD[n] ers
$A_TIMERSI[n] Timer
F_SENDDP
$A_FSDP_ERR_RE Response when a com‐
AC[n] munication error occurs
$A_FSDP_ER‐ There is a communica‐
ROR[n] tion error
$A_FSDP_SUBS_O Substitute values are
N[n] output to the application
at the F_RECVDP (re‐
ceiver)
$A_FSDP_DIAG[n] The cause of the com‐
munication error deter‐
mined by F_SENDDP is
communicated
F_RECVDP
Safety Integrated
Function Manual, 12/2017, 6FC5397-4BP40-6BA1
Value range Data type
n = 1, 2, ... 192 BOOL
stands for the
number of the
marker
n = 1, 2, ... 6 INT
stands for the
number of the dou‐
ble word (32 bit)
n = 1, 2, ...192 BOOL
stands for the
number of the
PLC marker
n = 1, 2, ... 6 INT
stands for the
number of the dou‐
ble word (32 bit)
n = 1, 2...16 REAL
stands for the
number of the tim‐
er
n = 1, ..., 16 stands INT
for the number of
the F-SENDDP re‐
lationship, is also
valid for
$A_FSDP_ER‐
ROR,
$A_FSDP_SUBS_
ON, $A_FSDP_DI‐
AG
n = 1, ..., 16 BOOL
n = 1, ..., 16 BOOL
n = 1, ..., 16 INT
Connecting sensors and actuators
8.5 Safe programmable logic
Possible access for
x x x
x x x
x x
x x
x x x
x x x
x x
x x
x x
x
x
x
x
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