Batch Controller RA33 Troubleshooting
Endress+Hauser 47
9.2.1 Troubleshooting for MODBUS
• Are the device and the master using the same baud rate and parity?
• Is the wiring of the interface OK?
• Does the device address sent by the master match the configured device address of the transmit-
ter?
• Do all slaves on the MODBUS have different device addresses?
9.2.2 Device error/alarm relay
There is a global "alarm relay" (the user can either assign the relay or one of the open collectors in
the setup).
This "alarm relay" switches if errors or type "F" (Failure) occur, i.e.:
Errors of type "M" (Maintenance required) do not switch the alarm relay.
For errors of type F, the color of the backlighting of the display also switches from white to red.
9.3 Diagnosis list
Refer also to error messages, → ä 46.
The device has a diagnostic list in which the last 10 diagnostic messages (messages with error num-
bers from type Fxxx or Mxxx) are stored.
The diagnosis list is designed as a ring memory, i.e. if the memory is full, the oldest messages are
overwritten automatically (without message).
The following information is stored:
•Date/time
•Error number
•Fault Text
The diagnosis list is not read out via PC operating software. However, it can be displayed via Field-
Care.
The following fall under Fxxx or Mxxx:
• Open circuit
• Sensor error
F501 Invalid configuration Check setup
M502 Device is locked!
- e.g. for firmware update attempt
Check the hardware switch on the device
F900 Input variable(s) outside the calculation limits (see Technical data,
→ ä 52)
• Check plausibility of the measured input values
• Check scaling of device inputs/sensor outputs
• Check system/process
M908 Analog/pulse output error Check process values and scaling of the output, select larger full
scale value (or pulse value) if necessary.
F910 Firmware for this device not released. Install correct firmware.
M918 Preset counter may not be 0! Enter value for preset counter.
M919 Flow rate greater than low flow cut off! Check sensors, valves or pumps.
M920 Batch aborted. No flow! Check sensors, valves or pumps.
M921 Fill deviation exceeded!
M922 Fill deviation undershot!
Error Description Remedial action
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