Setting up an S7-300 with a Technology CPU
4.8 Status and error displays of the Technology CPU
LED Meaning
SF 5 VDC FRCE RUN STOP
Off On
X (see the
description)
Off On The CPU is in STOP mode.
Remedy: Start the CPU.
On On X Off On The CPU is in STOP mode as a result of error.
Remedy: refer to the tables below, evaluation of the SF LED
X On X Off Flashes
(0.5 Hz)
The CPU requests memory reset.
X On X Off Flashes
(2 Hz)
The CPU executes memory reset.
X On X Flashes
(2 Hz)
On The CPU is in startup mode.
X On X Flashes
(0.5 Hz)
On The CPU was halted by a programmed break point.
For details, refer to the Programming Manual
Programming with
STEP 7
.
On On X X X Hardware or software error
Remedy: refer to the tables below, evaluation of the SF LED
X X On X X You enabled the Force function
For details refer to the Programming Manual
Programming with
STEP 7
.
X X X On Flashes
(2 Hz)
STOP/shutdown
What happens during shutdown?
The control of the Technology CPU is already in STOP mode during
"shutdown". The outputs of the centralized and distributed I/Os are
deactivated.
The integrated inputs/outputs for integrated technology and the
ET 200M on the DP(DRIVE) are still active during shutdown.
The integrated technology of the Technology CPU shuts down the
drives on PROFIBUS DP(DRIVE) in a controlled manner.
The integrated technology of the CPU then also goes into STOP.
The integrated inputs/outputs for integrated technology and the
ET 200M on the DP(DRIVE) are deactivated.
The maximum duration of shutdown depends on your configuration
in S7TConfig.
X X X Flashes
(0.5 Hz)
Flashes
(2 Hz)
HOLD/shutdown
Flashes Flashes Flashes Flashes Flashes Internal errors in Technology CPU.
Contact your local SIEMENS partner.
S7-300 CPU Data: CPU 315T-2 DP
Manual, 12/2005, A5E00427933-02
4-7
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