ABB ACH550-UH User Manual page 170
Ach550 series, hvac drives (1...550 hp), e-clipse bypass drives (1...400 hp), packaged drives with disconnect (1...550 hp)
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- User manual (348 pages) ,
- Installation, operation & maintenance manual (95 pages) ,
- User manual (307 pages)
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1-166
Group 53: EFB PROTOCOL
This group defines set-up variables used for an embedded fieldbus (EFB)
communication protocol. The standard EFB protocol in the ACH550 is Modbus. See
chapter
Code Description
5301 EFB PROTOCOL ID
Contains the identification and program revision of the protocol.
• Format: XXYY, where xx = protocol ID, and YY = program revision.
5302 EFB STATION ID
Defines the node address of the RS485 link.
• The node address on each unit must be unique.
5303 EFB BAUD RATE
Defines the communication speed of the RS485 link in kbits per second (kb/s).
1.2 kb/s
2.4 kb/s
4.8 kb/s
9.6 kb/s
19.2 kb/s
38.4 kb/s
57.6 kb/s
76.8 kb/s
5304 EFB PARITY
Defines the data length, parity and stop bits to be used with the RS485 link communication.
• The same settings must be used in all on-line stations.
0 = 8
1 – 8 data bits, no parity, one stop bit.
NONE
1 = 8
2 – 8 data bits, no parity, two stop bits.
NONE
2 = 8
1 – 8 data bits, even parity, one stop bit.
EVEN
3 = 8
1 – 8 data bits, odd parity, one stop bit.
ODD
5305 EFB CTRL PROFILE
Selects the communication profile used by the EFB protocol.
0 =
– Operation of Control/Status Words conforms to ABB Drives Profile (limited), as used in ACH400
ABB DRV LIM
and ACH550.
1 =
– Operation of Control/Status Words conforms to 32-bit DCU Profile.
DCU PROFILE
2 =
– Operation of Control/Status Words conforms to ABB Drives Profile (full).
ABB DRV FULL
5306 EFB OK MESSAGES
Contains a count of valid messages received by the drive.
• During normal operation, this counter is increasing constantly.
5307 EFB CRC ERRORS
Contains a count of the messages with a CRC error received by the drive. For high counts, check:
• Ambient electro-magnetic noise levels – high noise levels generate errors.
• CRC calculations for possible errors.
5308 EFB UART ERRORS
Contains a count of the messages with a character error received by the drive.
Parameters
page 1-185.
Embedded fieldbus
Group 53: EFB Protocol
Range
0000...FFFF hex
0...65535
1.2, 2.4, 4.8, 9.6, 19.2,
38.4, 57.6, 76.8 kb/s
0...3
0...2
0...65535
0...65535
0...65535
ACH550-UH User's Manual
Resolution
Default
1
0000 hex
1
1
-
9.6 kb/s
1
0 (8
1
0 (
ABB DRV LIM
1
0
1
0
1
0
S
1)
NONE
)
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