S5-115F Manual
System Startup
Figure 4-9. Flowchart for Startup: Entering the Subunit IDs
Does the
”DB1 not in PLC”
error message appear?
no
Enter subunit IDs
Connect programmer to
subunit that is to be ”subunit A”
Enter subunit ID ”A”
Does a programmer
error message
appear on the screen?
Correct error with the help of
Appendix B in Volume 2 of the
manual
Switch PS 951 power supply
in both subunits OFF and ON again
Switch mode selector from
STOP to RUN
Read error message via COM 115F
Return to label 1 in Figure 4-8
a a a a
a a a a
a a a a
a a a a
yes
a a a a a
a a a a a
a a a a a
a a a a a
a a a a a
yes
a a a a
a a a a
a a a a
a a a a
a a a a
no
Is the red LED on the
CPU flashing
(lesser STOP loop)?
a a a a a
a a a a a
a a a a a
a a a a a
yes
a a a a
a a a a
a a a a
a a a a
no
EWA 4NEB 811 6148-02
4-15