
8
Operation
DH.21B/41B Controller
Manual – DHE/DHF/DHR21B (standard) and DHE/DHF/DHR41B (advanced)
63
8
Operation
8.1
DH.21B/41B Controller
The DH.21B/41B controller comes equipped with 10 LEDs (L1 – L10) that indicate the
present state of the controller and the interfaces.
No.
Name
Function
LED 1
CAN 1 status
CAN 1 system bus status
LED 2
CAN 2 status
CAN 2 system bus status
LED 3
IEC program status
IEC program status
LED 4
Controller status
Controller firmware status
LED 5
User LED
Freely programmable
LED 6
DIO6/7
Status input or output DIO6/7
LED 7
DIO4/5
Status input or output DIO4/5
LED 8
DIO2/3
Status input or output DIO2/3
LED 9
DIO0/1
Status input or output DIO0/1
LED 10
24 V / I/O OK
Status of I/O voltage supply
8.1.1
LED "H1/H2" in stand-alone operation
LED "H1/H2" is reserved for stand-alone operation and the installation in
MOVITRAC
®
B.
8.1.2
LED "L1" (CAN 1 status)
LED "L1" indicates the status of the CAN 1 system bus.
Status LED
Possible cause
Measure
Orange
The CAN 1 system bus is being initial-
ized.
–
Green
The CAN 1 system bus is being initial-
ized.
–
Flashing green with
0.5 Hz
The CAN 1 system bus is in SCOM
suspend mode.
–
Flashing green with 1 Hz
The CAN 1 system bus is in SCOM On
mode.
–
Red
The CAN 1 system bus is off (BUS-
OFF).
•
Check and correct the cabling of
the CAN 1 system bus.
•
Check and correct the baud rate
set for the CAN 1 system bus.
•
Check and correct the terminating
resistors of the CAN 1 system bus.
Flashing red with 1 Hz
Warning on the CAN 1 system bus.
•
Check and correct the cabling of
the CAN 1 system bus.
•
Check and correct the baud rate
set for the CAN 1 system bus.
22900055/EN – 08/2016
Содержание DH 21B Series
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