5 Product Specification
NivuLink Compact - Document revision 02 / 06.08.2020
page 23
5.4 LED Indication Field Bus/System
Status LED S5
Status LED S4
Status LED S3
Status LED S2
Status LED S1
Network status
System status
PLC program status
Internal data bus status
Module status
Without function
Status of connection to communications hub
Fig. 5-4
Indicating elements for fieldbus/system
5.4.1 Status-LEDs
Status LEDs S1 - S5
Signal
strength
Remarks
▐
(S1)
█
(S2)
▐█
(S3)
██
(S4)
▐██
(S5)
UMTS
GSM
Off
Off
Off
Off
Off
No
service
Yel-
low
Off
Off
Off
Off
Level 1
Connection
failures likely
Connection fail-
ures likely
Green
Off
Off
Off
Off
Level 2
HSDPA possi-
ble, unstable
connection
GPRS, very
slow data con-
nection
Green
Green
Off
Off
Off
Level 3
HSDPA possi-
ble, no weath-
er reserve
GPRS, stable
data connection,
maximum data
rate (54 kBit/s)
Green
Green
Green
Off
Off
Level 4
HSDPA, sta-
ble connection
EDGE, stable,
possibly very
slow data con-
nection
Green
Green
Green
Green
Off
Level 5
HSDPA, max-
imum data
rate 7.2 Mbit/s
EDGE, maxi-
mum data rate
(220 kBit/s)
Green
Green
Green
Green
Green
Level 6
HSPA+ possi-
ble (if availa-
ble)
E-EDGE possi-
ble (up to
1 Mbit/s)
Tab. 5-2 Status LEDs
