Starting Up
6-18
S7-400 and M7-400 Programmable Controllers, Installation Manual
C79000-G7076-C424-01
Startup if preset config.
actual config. = yes (default)
Startup if preset config. 0 actual config. = no
CPU goes into RUN The CPU remains at STOP and, after the time set in the
“module time limits” parameter, the BUSF LED flashes.
Flashing of the BUSF LED indicates that at least one
slave will not respond. In this case, check whether all
slaves are switched on or display the content of the
diagnostic buffer (see
Configuring Hardware and
Communication Connections with STEP 7 V5.0
).
To set the “Startup” parameter, see also the
Reference Manual
, Chapter 4, the
manual C
onfiguring Hardware and Communication Connections with STEP 7 V5.0,
and the online help for STEP 7.
www.PLCworld.cn
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