Technical data

With the test functions, only the data exchange between the
PLC and CP via the S5 backplane bus is monitored. The data
transmission from the CP on the L2 bus cannot be checked
with the test functions (to check this traffic, use the SINEC L2
bus monitor "SCOPE L2"). If PLC or bus errors occur, COM
5430 TF/COM 5431 FMS uses the various messages contained
in the status word (ANZW) of the handling blocks and the
link_status of the confirmation header.
14.2.1 S5-S5/ Free L2 - Test Functions
With the S5-S5 / free L2 link test functions, you can determine the status of
individual parts of the system during communication and localize any errors
that are detected.
Documentation, Test B8976060/02
Volume 1 14 - 4