Chapter 2 – AC 80 Hardware and Connections
2-4
AC 80 User’s Manual
General Purpose LEDs
When the S7 LED is on, and the F LED is off, S0 to S6 indicate the
AC 80 status as follows:
The normal operation state (P1) is indicated as shown below:
When the S7 LED is off, and the F LED is on, S0 to S6 indicate an
error code. See
Chapter 5 – Diagnostics for details.
S7
S6
S5
S4
S3
S2
S1
S0
AC 80 Status
on
P-
CPU in initial phase
on
on
P1
CPU in operational mode
on
on
on
P3
CPU has stopped after initialisation. START MODE attribute at
DB element has been set to STOP
on
on
P4
CPU is not running an application program
on
on
on
P5
CPU is loading an application program from the internal PROM
on
on
on
P6
Programming tool is connected (CPU is in on-line mode)
on
on
on
on
--
Boot-up program erasing system PROM (prepare for loading)
on
on
on
on
on
on
on
on
PL
Boot-up program waiting for system program download (after
erasure or detection of corrupt program in system PROM)
B
F
R
S3
S2
S1
S5
S6
S7
S0
S4
T2
T1
P
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