Error Causes And Remedies; Optical Displays - TR-Electronic 65 Serie Gesamt-Bedienungsanleitung

Error Causes and Remedies

9 Error Causes and Remedies

9.1 Optical displays

The LED function is controlled by NMT State Machine transitions; see Figure 10 on
page 118 and Figure 11 on page 120. LED allocation see chapter "Bus status display"
on page 132.
Error LED
OFF
ON
Link LED
OFF
FLASHING
ON
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Cause
No error, node is in state
NMT_CS_OPERATIONAL
(NMT_CT7)
If the node doesn't receive any
SoC, PReq, PRes or SoA frame
during a definable timeout
intervall after entering the
NMT_CS_NOT_ACTIVE state, the
node changes over to
NMT_CS_BASIC_ETHERNET
(NMT_CT3).
It was executed a hardware- or a
local software RESET. The node
is initialized and changes into the
state NMT_GS_INITIALISING
(NMT_GT2).
Due to an internal error the node
was transferred into the state
"Error condition" (NMT_CT11).
Causes for this can be CRC
errors or Loss of frames.
Due to an internal error the node
was transferred into the state
"Internal Communication Error"
(NMT_GT6). Causes for this can
be Tx/Rx buffer
underrun/overflow errors or
Collision errors.
Cause
Voltage supply absent or too low
No bus connection
Hardware error,
measuring system defective
Measuring system ready for
operation, connection to master
established, data transfer active.
Measuring system ready for
operation, connection to master
established, no data transfer.
TR - ECE - BA - DGB - 0071 - 05
Remedie
Normal operating state
Timeout is defined in Object 1F99h:
NMT_CNBasicEthernetTimeout_U32, page 165.
Default value = 5 s. The informations indicated
there must be considered.
According to the state machine the node must be
taken into operation again.
- In order to locate the error, the reported Error
code in the StatusResponse frame must be
evaluated, see Error Codes on page 186.
Optionally the threshold must be adjusted in the
corresponding objects.
- In order to locate the error, the reported Error
code in the StatusResponse frame must be
evaluated, see Error Codes on page 186.
Optionally the threshold must be adjusted in the
corresponding objects.
Remedie
- Check voltage supply, wiring
- Is the voltage supply in the permissible range?
Check bus cable
Replace measuring system
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Printed in the Federal Republic of Germany
06/26/2017