ACH550 E-Clipse Bypass User’s Manual
2-105
Embedded fieldbus
Serial communication diagnostics – drive
Network problems can be caused by multiple sources. Some of these sources are:
• Loose connections
• Incorrect wiring (including swapped wires)
• Bad grounding
• Duplicate station numbers
• Incorrect setup of bypass or other devices on the network
The major diagnostic features for fault tracing on an EFB network include Group 53
EFB Protocol parameters 5306…5309. The
section on page
describes these parameters in detail. Group 53 applies to the drive external
communications. Group 50 applies to the bypass external communications.
Diagnostic situations
The sub-sections below describe various diagnostic situations – the problem
symptoms and corrective actions.
Normal operation
During normal network operation, 5306…5309 bypass parameter values act as
follows at each bypass:
• 5306
DV
OK
MESSAGES
advances (advances for each application message
properly received and addressed to this drive).
• 5307
DV
CRC
ERRORS
does not advance at all (advances when an invalid
message CRC is received).
• 5308
UART
ERRORS
does not advance at all (advances when character format
errors are detected, such as parity or framing errors).
• 5309
DV
status value varies depending on network traffic.
• BACnet protocol: 5316
EFB
PAR
16 (MS/TP token counter) advances for each
token passed to this drive. (Does not apply for other protocols.)
Loss of communication
The action taken by the ABB E-Clipse Bypass, if communication is lost, is configured
in
. The parameters are 3004
COMM
LOSS
and 3005
COMM
TIME
.
The
section describes these parameters in detail.
No master station on line
If no master station is on line: Neither the
EFB
OK
MESSAGES
nor the errors (5307
EFB
CRC
ERRORS
and 5308
EFB
UART
ERRORS
) increase on any of the stations.
To correct:
• Check that a network master is connected and properly programmed on the
network.
• Verify that the cable is connected, and is not cut or short circuited.
Summary of Contents for ACH550-BCR
Page 4: ...iv Manual contents ...
Page 6: ......
Page 12: ...1 8 ACH550 UH User s Manual Table of contents ...
Page 36: ...1 32 ACH550 UH User s Manual Installation ...
Page 70: ...1 66 ACH550 UH User s Manual Application macros ...
Page 335: ...ACH550 UH User s Manual 1 331 Technical data ...
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Page 382: ...2 36 ACH550 E Clipse Bypass User s Manual Start up ...
Page 398: ...2 52 ACH550 E Clipse Bypass User s Manual Bypass functions overview ...
Page 406: ...2 60 ACH550 E Clipse Bypass User s Manual Application macros ...
Page 544: ...2 198 ACH550 E Clipse Bypass User s Manual Embedded fieldbus ...
Page 584: ...2 238 ACH550 E Clipse Bypass User s Manual Diagnostics ...
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Page 612: ...3 6 ACH550 UH User s Manual Table of contents ...
Page 622: ...3 16 ACH550 PCR PDR User s Manual Installation ...
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