Data transfer to the PLC
7.3 Functional sequences/description of functions
3WL/3VL circuit breakers with communication capability - PROFIBUS
System Manual, 03/2011, A5E01051353-02
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External diagnostics trip
If there is an external diagnostic message, "01" instead of "00" is set in byte 7.
External diagnostics on SENTRON WL are only triggered if one of the following statuses
occurs:
●
COM15 is not ready for operation.
●
Bit 18.2 or/and 18.3 report a number not equal to 0 (that is, essentially a maintenance
message).
●
Bit 18.4 is set, that is, the circuit breaker is not present.
●
One of the bits of byte 19 is equal to "1".
Module presence on the CubicleBUS
In bytes 24 to 27, the presence of a module on the CubicleBUS is entered. If a module is
added, or another is removed, or a fault is detected on a module, the relevant bit in byte 19
(19.2, 19.3, 19.4) is set and the affected module is indicated in bytes 20 to 23. A coming
diagnostic message is triggered on PROFIBUS DP. If nothing else changes on the module
triggering the diagnostics, the message goes again after 10 seconds (provided there are no
other reasons for a diagnosis). The information about the last change (19.2, 19.3 or 19.4
plus module number byte 20 to 24) remains until another message is received. If a module is
added, the relevant module is indicated in bytes 20 to 24. In the module presence list, the
added module does not appear until after the outgoing diagnostic message (10 s). The user
can see at any time which module was last added on the CubicleBUS.
The same applies for removing modules, with the difference that they are not removed from
the module presence list until after the outgoing diagnostic message.
Error messages
In the case of error messages on a module, the CubicleBUS module remains in the module
presence list.
Diagnostics of the SENTRON VL
The SENTRON VL has fewer diagnostic messages than the SENTRON WL. There are
coming and outgoing diagnostic messages here too.
The following messages are available:
●
There are no diagnostic messages
●
The COM20 is out of service
●
The communication connection between COM20 and SENTRON VL has been
interrupted
Diagnostic interrupt in S7 and S7V1 operating mode
If the SENTRON circuit breakers are configured using the object manager, they are activated
in operating mode S7V1. A diagnostic message here does not automatically result in
execution of OB 82. Diagnostic interrupts are not supported.
The diagnostic information can be read by the slave at any time using SFC 13.