Diagnostics in SIMATIC STEP 7
There is a comprehensive diagnostics function
block available for SIMATIC S7-300/S7-400. This automatically reads-out the
diagnostics data from the AS-Interface safety monitor. The status of the logic
blocks in the safety monitor can be directly transferred to the control (PLC)
via the AS-Interface bus. From there, information e.g. can be output on an operator
display (HMI) or saved in an archive. This diagnostics package also includes
a function block to diagnose the master – and can be used to read-out the
system status from the AS-Interface master. This is realized independently of
the safety monitor and can also be used for a pure standard AS-Interface network.
An appropriate diagnostics subroutine is also available for the S7-200 small
control system.
|
Hide Images |
Print
