128 ACH550-UH User’s Manual
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Group 53: EFB Protocol
This group defines set-up variables used for an embedded fieldbus (EFB)
communication protocol. Refer to communication protocol documentation for more
information on these parameters.
Group 53: EFB Control
Code Description Range Resolution Default S
5301 EFB PROTOCOL ID 0000…FFFF hex 1 0000 hex
Contains the identification and program revision of the protocol.
• Format: XXYY, where xx = protocol ID, and YY = program revision.
5302 EFB STATION ID 0…65535 1 1 9
Defines the node address of the RS485 link.
• The node address on each unit must be unique.
5303 EFB BAUD RATE 1.2…57.6 kbits/s - 9.6 kbits/s
Defines the communication speed of the RS485 link in kbits per second (kbits/s).
1.2 kbits/s
2.4 kbits/s
4.8 kbits/s
9.6 kbits/s
19.2 kbits/s
38.4 kbits/s
57.6 kbits/s
5304 EFB PARITY 0…3 0
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
N1 – 8 data bits, No parity, one stop bit.
1 = 8
N2 – 8 data bits, No parity, two stop bits.
2 = 8
E1 – 8 data bits, Even parity, one stop bit.
3 = 8
O1 – 8 data bits, Odd parity, one stop bit.
5305 EFB CTRL PROFILE 0, 1 1 0
Selects the communication 1=ACH550 profile used by the EFB protocol.
0 =
ABB DRIVES – Operation of Control Word and Status Word conforms to ABB Drives Profile.
1 =
ACH550 – Alternate 32 bit profile (Advanced users only).
5306 EFB OK MESSAGES 0…65535 1 0
Contains a count of valid messages received by the drive.
• During normal operation, this counter is increasing constantly.
5307 EFB CRC ERRORS 0…65535 1 0
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 0…65535 1 0
Contains a count of the messages with a character error received by the drive.
5309 EFB STATUS 0…7 1 0
Contains the status of the EFB protocol.
0 =
IDLE – EFB protocol is configured, but not receiving any messages.
1 =
EXEC. INIT – EFB protocol is initializing.
2 =
TIME OUT – A timeout has occurred in the communication between the network master and the EFB protocol.
3 =
CONFIG ERROR – EFB protocol has a configuration error.
4 =
OFF-LINE – EFB protocol is receiving messages that are NOT addressed to this drive.
5 =
ON-LINE – EFB protocol is receiving messages that are addressed to this drive.
6 =
RESET – EFB protocol is performing a hardware reset.
7 =
LISTEN ONLY – EFB protocol is in listen-only mode.
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