Parameterizing The Plc; Clock Cycle Setting Of The F_Dp Communication - Siemens SINUMERIK 840D sl Function Manual

Transfer of integer values has not been implemented. Substitute values not required for integer values.
1)
Assignment of the corresponding assign and filter machine data of the SPL connection.
2)
Transfer of integer values has not been implemented. The value possibly transferred from an F-CPU
3)
in the F-telegram is not made available to the user.
Description of the SFC(%3) under error code (%4), see Step7, online help
4)
8.4.5

Parameterizing the PLC

Communication error when the control boots before SPL processing starts
When booting, user interface DB18 is initialized with the boot substitute values and the boot
error response from the NCK machine data. The values are valid and are effective when a
communication error occurs as long as they are not overwritten with other values from the SPL.
Initializing when booting:
FSDP[1..n].ERR_REAC = $MN_SAFE_SDP_ERR_REAC[0...n-1]
FRDP[1..n].SUBS[0..15] = $MN_SAFE_RDP_SUBS
FRDP[1..n].ERR_REAC = $MN_SAFE_RDP_ERR_REAC
8.4.6

Clock cycle setting of the F_DP communication

MD13320 $MN_SAFE_SRDP_IPO_TIME_RATIO can be used to set a reduction ratio to the
IPO clock cycle on the NCK side, this defines the time grid F_DP in which communication takes
place between the NCK and PLC (F_DP clock cycle). This means that it is indirectly possible
to optimize the utilization of the PLC using the F_DP communication.
The following supplementary conditions apply:
● The maximum value of the F_DP clock cycle exceeded
The upper value of the F_DP clock cycle is actively limited. A parameterizing error
(F_DP_clock cycle > 250 ms) results in Alarm 27300: "F_DP: Cycle time %1 [ms] is too
long".
● Response when OB40 clock cycle is > F_DP clock cycle
If the F_DP clock cycle is exceeded, then Alarm 27352 "F_DP: Communication error %1,
error %2" is not immediately output, but up to a maximum limit value of 500 ms, an attempt
is made to restart the OB40 coupling. In this case, the IPO clock cycle is used as call cycle
and no longer the F_DP clock cycle.
After the 500 ms limit has been exceeded, the alarm mentioned above is output and the
configured stop response (STOP D or E) is initiated. F_DP communication processing is
stopped. The F_RECVDP drivers output failsafe values (0) as F-net data.
Safety Integrated
Function Manual, 12/2017, 6FC5397-4BP40-6BA1
8.4 Safety-related CPU-CPU communication (F_DP communication)
SIMATIC block parameter
F_RCVDP (FB224)
RETVAL 15
DIAG
Connecting sensors and actuators
SINUMERIK parameters
Alarm27354
4)
$A_FRDP_DIAG
243