ACS-CONTROL-SYSTEM GmbH
l Lauterbachstr. 57 l D-84307 Eggenfelden l www.acs-controlsystem.de l [email protected]
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Universal Data Manager
Diagnostics and troubleshooting
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11.2.2 Troubleshooting for Modbus RTU
• Do the device and master have the same baudrate and parity?
• Is the interface correctly wired?
• Does the device address sent by the master match the configured address of the device?
• Do all the slaves on the Modbus have different device addresses?
11.2.3 Troubleshooting for Modbus TCP
• Is the Ethernet connection between the device and master correct?
• Does the IP address sent by the master match the address configured on the device?
• Does the port configured on the master match the port configured on the device?
11.3 Diagnostic information on the local display
The diagnostic message consists of a diagnostic code and a message text.
The diagnostic code is made up of the error category as per Namur NE 107 and the
message number.
Error category (letter in front of the message number)
•
F = Failure
. A malfunction has been detected.
The measured value of the affected channel is no longer reliable. The cause of the
malfunction is to be found in the measuring point. Any controller connected should be
set to manual mode. An alarm relay can be assigned to this error category in the
Advanced setup.
•
M = Maintenance required.
Action must be taken as soon as possible.
The device still measures correctly. Immediate measures are not necessary. However,
proper maintenance efforts would prevent a possible malfunction in the future.
•
S = Out of specification
. The measuring point is being operated outside specifications.
Operation is still possible. However, you run the risk of increased wear, shorter operating
life or lower accuracy levels. The cause of the problem is to be found outside the
measuring point.
•
C = Function check
. The device is in Service mode.
Diagnost
ic code
Message text
Description
Remedy
F100
Sensor-/Input error! Sensor/input error
Check the connections and parameters
F101
Open circuit!
Open circuit
Check connections
F105
Invalid value!
Measured value is invalid (when
calculating --> NAN)
Check process variables
F201
Device fault
Device error
Contact the Service Department
F261
Failure: RAM
No access to RAM
Contact the Service Department
F261
Error: Flash
No access to flash
Contact the Service Department
F261
Error: SRAM
No access to SRAM
Contact the Service Department
F261
Analog card x is out
of order!
Hardware defect detected
Contact the Service Department, replace
card
F261
Digital card out of
order!
Hardware defect detected
Contact the Service Department, replace
card
F261
Fieldbus card out of
order!
Hardware defect detected
Check contacts of Anybus card, contact
the Service Department
F261
Power supply out of
order!
Hardware defect detected
Contact the Service Department, replace
power unit
M284
Firmware update
Firmware has been updated.
No action required. Message can be
acknowledged.
