Fieldbus control through the embedded fieldbus interface (EFB) 437
11
Fieldbus control through the
embedded fieldbus interface
(EFB)
What this chapter contains
The chapter describes how the drive can be controlled by external devices over a
communication network (fieldbus) using the embedded fieldbus interface.
System overview
The drive can be connected to an external control system through a communication
link using either a fieldbus adapter or the embedded fieldbus interface.
The embedded fieldbus interface supports the Modbus RTU protocol. The drive
control program can handle 10 Modbus registers in a 10-millisecond time level. For
example, if the drive receives a request to read 20 registers, it will start its response
within 22 ms of receiving the request – 20 ms for processing the request and 2 ms
overhead for handling the bus. The actual response time depends on other factors as
well, such as the baud rate (a parameter setting in the drive).
The drive can be set to receive all of its control information through the fieldbus
interface, or the control can be distributed between the embedded fieldbus interface
and other available sources, for example, digital and analog inputs.
Содержание ACS880 ESP
Страница 1: ...ABB industrial drives Firmware manual ACS880 PCP ESP control program ...
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Страница 28: ...28 PCP ESP control start up ...
Страница 30: ...30 Using the control panel ...
Страница 94: ...94 Standard programposi features ...
Страница 100: ...100 Default control connections ...
Страница 360: ...360 Parameters ...
Страница 362: ...362 Additional parameter data Fieldbus addresses Refer to the User s Manual of the fieldbus adapter ...
Страница 436: ...436 Fault tracing ...
Страница 486: ...486 Control chain diagrams ...
Страница 492: ...492 Appendix ESP with step up transformer and sine filter ...
Страница 494: ...Contact us www abb com drives www abb com drivespartners 3AXD50000016186 Rev B EN 2015 10 27 ...