Siemens SINUMERIK 840D sl Function Manual page 286

Connecting sensors and actuators
8.5 Safe programmable logic
System variable Meaning
$A_FRDP_SUBS[n] Those substitute values
are specified, which are
output to the SPL in cer‐
tain states
$A_FRDP_ERR_RE Response when a com‐
AC[n] munication error occurs
$A_FRDP_ER‐ There is a communica‐
ROR[n] tion error
$A_FRDP_SUBS_O Substitute values are
N[n] output to the application
$A_FRDP_ACK_RE Error-free F-telegrams
Q[n] are again cyclically ex‐
changed after a commu‐
nication error
$A_FRDP_DIAG[n The cause of the com‐
munication error deter‐
mined by F_RECVDP is
communicated
$A_FRDP_SEND‐ Actual operating mode
MODE[n] of the F-CPU of the
F_SENDDP communi‐
cation partner
Miscellaneous
286
Value range Data type
n = 1, ..., 16 stands INT
for the number of
the F-RECVDP
connection, is also
valid for
$A_FRDP_ERR_
REAC,
$A_FRDP_ACK_R
EI, $A_FRDP_ER‐
ROR,
$A_FRDP_SUBS_
ON,
$A_FRDP_ACK_R
EQ,
$A_FRDP_SEND‐
MODE,
$A_FRDP_DIAG
n = 1, ..., 16 INT
n = 1, ..., 16 BOOL
n = 1, ..., 16 BOOL
n = 1, ..., 16 BOOL
n = 1, ..., 16 INT
n = 1, ..., 16 BOOL
Possible access for
x x x
x x x
x x
x x
x x
x x
x x
Function Manual, 12/2017, 6FC5397-4BP40-6BA1
x
x
Safety Integrated