Communication Via Field Bus Connection (Sdo1); 4.10.2.1 Profibus-Dp; 4.10.2.2 Rs232/Rs485 With Vectron Bus Protocol - BONFIGLIOLI actice Instruction Manual

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4.10.2

If a frequency inverter has been defined as the system bus master and equipped with

a field bus interface, access to the parameterization of all the nodes on the system bus

is possible via this field bus interface and the first SDO channel (SDO1). An extension

has been created in the protocol frame of the field buses for this purpose.

Attention! The prerequisite for this mechanism is that the identifier setting for the

4.10.2.1 Profibus-DP

If an object with communication channel (PKW) is used in Profibus-DP, access to all

other nodes on the system bus is possible. The structure of the communication chan-

nel permits an additional addressing of a system bus node. This is done by the use of

an unused byte in the communication channel.

Communication channel PKW

Byte 3 is used to transmit the node ID of the required node on the system bus. If byte

3 = 0, the master inverter of the system bus is addressed. The display is binary

(0...63).

4.10.2.2 RS232/RS485 with VECTRON bus protocol

In the VECTRON bus protocol, there is a byte in the telegram header that is always

transmitted with 0 as a standard feature.

ENQUIRY

SELECT

Byte 1 in the enquiry and byte 2 in the select telegram are not defined and are used to

transmit the node ID of the required node on the system bus. If this byte = 0, the

master inverter of the system bus is addressed. The display is ASCII corresponding to

the conventions for the display of the address in the VECTRON bus protocol.

Note: