Commissioning
Operation Manual Safety I/O Terminals SI4000 / SO4000
Document no.: 5.08009.05
55
of 82
7
7.2.1.3 Diag 3 (red) and Diag 4 (red)
The Diag 3 and Diag 4 LEDs indicate internal terminal errors.
NOTICE!
Returning the terminal
These errors lead to shutdown of the termin
al. The terminal must be checked by Bau-
mueller Anlagen-Systemtechnik GmbH
& Co. KG.
Diag 3 LED (red) Diag 4 LED (red) Source of error
Lit flashes (see below for
flashing codes)
µC1
Lit off µC2
In the event of a fault the Diag 4 LED indicates the
type of error through flashing codes.
The flashing codes are structured as follows:
Flashing sequence Meaning
Rapid flickering Start of flashing code
First slow sequence Error code
Second slow sequence Error code argument
Figure 14: Blinking sequence
Count the number of flash pulses after the rapid flickering sequence
m during the first slow sequence in order to ascertain the error code
m during the second slow sequence in order to ascertain the error argument
The flashing code is repeated after the seco
nd slow sequence, followed by rapid flicker-
ing.
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