Status And Error Displays Of The Im151-3 Pn; Diagnosis Using The Leds - Siemens SIMATIC ET 200S Manual

6.2.3

Diagnosis using the LEDs

Interface module
Figure 6-36
Status and error displays with LEDs on IM151-3 PN
Table 6-28 Status and error displays of the IM151-3 PN
SF:
SF
BF:
BF
ON:
ON
LINK: green
LINK
RX/TX RX/TX: yellow
LEDs
SF BF ON
Off Off Off
* * on
ET 200S Distributed I/O System
EWA-4NEB 780602402-12
ET 200S
IM151-3 PN with open front door
The LINK and RX/TX LEDs are under the front door.
LED display on the IM151-3 PN interface module
red
red
green
Meaning
There is no voltage applied to the
interface module, or the interface
module has a hardware defect.
There is voltage applied to the
interface module.
Commissioning and Diagnostics
Group error (red)
SF
BF
Bus error (red)
ON
Power supply (green)
LINK
I/O controller not available (green)
RX/TX
Data exchange (yellow)
Switch on the 24 VDC supply voltage
at the interface module.
--
Remedy
6-61