Leds And Connectors; Leds - Siemens SIMATIC S7-400 Operating Instructions Manual

LEDs and connectors

2.1

LEDs

LEDs
The display on the front panel consists of the following LEDs that indicate the operating
mode and communications status.
Figure 2-1
The LEDs have the following meaning:
LED name
INTF
EXTF
BUSF
TXD
RXD
SERVER
CLIENT
RUN
STOP
X1P1
Table 2- 1
Symbol
Meaning
CP 443-1 OPC UA
Operating Instructions, 01/2017, C79000-G8976-C427-02
LEDs of the CP
Meaning
Internal error
External error
Bus fault
Frame traffic (sending) over Ethernet
Frame traffic (receiving) over Ethernet
OPC UA server
OPC UA client
RUN mode
STOP mode
Connection status of Ethernet port 1
Legend for the following tables
ON OFF Flashing
2
-
any
25