Siemens Simatic RTU303xC Series Operating Instructions Manual page 50

LEDs, connectors, buttons, card slots
2.2 LEDs
Name
RTU3031C: GPS
Status LEDs of the inputs (DI, AI) and outputs (DQ)
Table 2- 7
Name
DI
DQ
AI
Status LEDs of the optional extension board
Table 2- 8
Name
HART
50
Color
IO status LEDs
Color
Extension board status LEDs
Color
TxD
Meaning
Data transfer with good wireless link quality (> -79 dBm)
No update mode
•
No reception
•
GPS disabled in the configuration
•
Position determination active
Receiving position
Meaning
Last read status of the "OFF" input
•
DI0 / DI1 configured as counters
•
Input not configured:
•
Last read status of the "ON" input
Last read status "OFF" (relay open)
•
Output not configured:
•
Last read status "ON" (relay closed)
No error
•
Input not configured:
•
Errors:
Measured value outside the measuring range (overshoot,
•
undershoot)
Cable break (with 4...20 mA signal)
•
Overload of the measuring amplifier of the RTU
•
Meaning
Extension board not configured
•
HART not enabled
•
HART bus enabled in the configuration
Outside of the update cycle
RTU sends data to the bus
Operating Instructions, 06/2019, C79000-G8976-C382-06
RTU303xC