Siemens SINUMERIK 840D sl Function Manual page 686

Diagnostics
11.2 NCK safety alarms for SINUMERIK 840D sl
27350 F_DP: %1 communication, connection %2 signals error %3
Remedy Check PROFIBUS communication and the communication partner.
Note
Only the F_DP communication is acknowledged for a user acknowledgment via DB18.FRDP_ACK_REI. The
alarm is still displayed and must be separately acknowledged using NC-RESET.
Check the logical basis addresses (the direct and indirect addressing should be taken into consideration) to
see if they have been used in other parts of the PLC configuration.
Additional diagnostic options
● Prevent the user program from being executed
● General PLC reset and load the basic program from the toolbox
Program con‐ Remove the error and issue a user acknowledgment via a channel_1 reset.
tinuation
27351 F_DP: %1 communication, connection %2 signals error %3
Parameter %1 = communication type
%2 = name or DP_DP_ID of the SPL connection
%3 = error detection
Explanation There is an F_DP communication error with the external communication partners and the programmed error
response is:
$A_FSDP_/FRDP_ERR_REAC = 2 (alarm, only display).
The following displays are possible for communication type (%1):
- F_SENDDP
- F_RECVDP
As connection (%2), the name or the DP_DP_ID (ID) of the F_DP connection relationship is displayed. One
of the following error causes is possible (see fault ID %3):
● SN: An error was detected in the telegram sequence.
● CRC: A CRC error was detected.
● TO: The parameterized communication timeout has been exceeded.
All of the specified error IDs, depending on the error profile, can also be displayed in a combination.
Response Alarm display
1. F_SENDDP/F_RECVDP: System variable $A_FSDP/FRDP_ERROR = TRUE
2. F_SENDDP/F_RECVDP: System variable $A_FSD/FRDP_DIAG < >0
3. F_RECVDP: System variable $A_FRDP_ACK_REQ = TRUE
4. F_RECVDP: Output of the substitute values specified in the system variable $A_FRDP_SUBS
Remedy Check PROFIBUS communication and the communication partner.
User acknowledgment via DB18.FRDP_ACK_REI or NC-RESET
Check the logical basis addresses (the direct and indirect addressing should be taken into consideration) to
see if they have been used in other parts of the PLC configuration.
Additional diagnostic options
● Prevent the user program from being executed
● General PLC reset and load the basic program from the toolbox
Program con‐ The alarm is no longer displayed when the alarm cause has been removed. No other operator actions are
tinuation required.
686
Function Manual, 12/2017, 6FC5397-4BP40-6BA1
Safety Integrated