Trigger Sdo - ADF Web HD67551 User Manual

Industrial Electronic Devices
TRIGGERED SDO (Hardware Without Ethernet):
The Trigger SDO is used to send SDO request not added in the Set SDO Client Access section. To use this option is neccessary to enable it
in the Set Communication Section (Fig. 3). It is neccessary to indicate where in the PROFIBUS data are present the parameter of the SDO.
The Parameter write by PROFIBUS master are:
ID. It is the ID of the CANopen device for the SDO. It use 1 byte;
Index. It is the Index of SDO. It use 2 bytes;
SubInd. It is the SubIndex of the SDO. It use 1 byte;
W Byte. It is the data bytes for a Write SDO. It use 4 bytes;
N° Byte. It is the dimension in byte of the read/write SDO. It use 1 byte;
R/W. It is used to send a read SDO request (equal to 0), or a write SDO request (equal to 1). It used 1 byte;
Trigger. It is used to send the SDO request.
The parameters read from PROFIBUS master are:
R Byte. It is the data bytes read from a read SDO. It use 4 bytes;
Status. It is the status of the SDO request. It use 1 byte.
The status can have these values:
0 = SDO Transaction OK and finished;
1 = SDO Transaction currently running;
2 = SDO Transaction failed;
3 = The gateway can accept another SDO request;
When the Trigger byte is setted to 1 the SDO request is sended to the CANopen network. The Status byte is setted to 1. If there is some
error in the request the Status takes the value 2 else takes the value 0. When the SDO request is finish the Trigger byte have to set to 0
and the Status Byte become to 3. At this poit is possible to do another request.
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User Manual CANopen / PROFIBUS Slave
Document code: MN67551_ENG Revision 1.100
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