Siemens SIMATIC TDC - CP51 M1 Status and fault displays

Communication modules
6.2 CP51M1 communication module
SIMATIC TDC hardware
132 System Manual, 08/2017, A5E01114865-AL
6.2.3
Status and fault displays
Status displays for module operation
Table 6- 5 Operating state displays for CP51M1 (LED H1 and H2)
Display
Operation state
H1 (green)
H2 (red)
Off
Off
CP51M1 is switched off or not parameterized
Off
On
CP51M1 is ready but not yet initialized
On Off CP51M1 is initialized
On
On
Power failure on CP51M1
Table 6- 6 Operating state displays for CP51M1 (LED H7 and H8)
Display
Operation state
H7 (green)
H8 (yellow)
Off
Off
Module is switched off (off-current state)
Off On STOP operating state
Initialization error, no valid configuration found
Flashing
Off
CP51M1 startup
On Off RUN operating state
Startup completed, CP51M1 is in normal operation
Flashing
Flashing
Module is defective
Status displays for network operation
Table 6- 7 Operating state displays for CP51M1 (LED H3 to H6)
LED
Display
Operation state
H3 (green)
On
CP51M1 has at least one full duplex connection
Flashing
Module is defective
H4 (yellow)
On
Data traffic in transmit and/or receive direction on Ethernet
H5 (green)
On
CP51M1 is communicating via Fast Ethernet (100 Mbps)
Flashing
CP51M1 is in the "auto-sensing phase“
H6 (green) On CP51M1 is connected (link) to an Ethernet compatible device (hub,
switch, PC)
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