Kübler Group
5 Commissioning and Operation
HB Modbus Interface - R67048.0002 - 02
EN - 11
5 Commissioning and Operation
5.1 Function and Status LED
A 2-color LED signals the operating and error status of the Modbus.
Display
LED
Meaning
RUN
The RUN LED displays the current status of the Modbus sensor
ERROR
On in the event of a fault.
Display
LED
Meaning
Error cause
Addition
(All) LEDs
off
No connection to the
master
Data line interruption
Wrong baud rate
Interchanged
data line
No voltage
Observe the combination
with the ERR LED.
When the ERR LED is
also off, ensure the
voltage supply
RUN flash-
ing about 1
ms
Device ready
for operation
Communication is
active
ERR off
Device operates
error-free
RUN flash-
ing < 1 ms
Modbus transmission
active
Combination with
Bus state
RUN LED flashing green
Transmission in progress
ERR flash-
ing
Error
Modbus signaled a
system error
Can also alternate with
the green LED when
transmission is in pro-
gress
5.2 Quick Start Guide
5.2.1 Changing the parameters
Modifying and reading device-specific parameters requires commands that are (can be) gener-
ated by means of the following function codes:
Function
code (dec)
Function
code (hex)
Name
Meaning
03
0x03
Read Holding Register
Reads the binary content of the hold-
ing registers (4XXXX references)
16
0x10
Preset Multiple Registers
Writes the binary content of the hold-
ing registers (4XXXX references)
17
0x11
Report Slave ID
Returns a description and
device-specific information
The function codes can be sent to the device via a control or a parameterization software.