Endress+Hauser Liquiline CM44 series - Communication Related Diagnostics; Bus Termination; Protocol Counters

SD01189C/07/EN/04.17
Endress+Hauser
25
5.4.2.2 Last active diagnostic message
Parameter
Input
Register
Data Type
Info
SENSOR_X_LAST_DIAG_MODUL
X*1000+100
UNSIGNED8
see above
SENSOR_X _LAST_DIAG_PORT
X*1000+101
UNSIGNED8
SENSOR_X_LAST_DIAG_NE107_STATUS
X*1000+102
UNSIGNED8
SENSOR_X _LAST_DIAG_CODE
X*1000+103
UNSIGNED16
SENSOR_X _LAST_DIAG_TIMESTAMP
X*1000+104
UNSIGNED32
5.5 Communication related diagnostics
5.5.1 Bus termination
Each Modbus segment must be terminated at each end using a bus terminator resistor.
The device has a terminating resistor with on/off switch. The status of this terminating resistor is displayed
via the T-LED on the communication module and can also be read via the device menu or Modbus.
Path: Menu/Expert/Diagnostics/System information/Modbus
Parameter
Input
Register
Data Type
Info
RS485_TERMINATION_STATE
941
UNSIGNED8
0 = RS485 terminating resistor is OFF
1 = RS485 terminating resistor is ON
5.5.2 Protocol counters
The device monitors communication and makes error counters available. The error counters can be read
via Modbus (8.3.3). The error counters may also be displayed directly at the device:
Path: Menu/Expert/Diagnostics/System information/Modbus