ADF Web SNMP Agent / CANopen User Manual page 35

Industrial Electronic Devices
ASYNC SDO REQUESTS:
The converter allows to send asynchronous SDO requests directly from SNMP to CANopen. This function can be enabled by checking the
option "Enable Triggered SDO" in the section "Set Communication".
It is necessary to write the bytes of SNMP blocks starting from the first byte defined in the field "Address Output Data TDSO" in this way:
The feedback of the SDO request is saved from the first byte defined in the field "Address Input Data TDSO" in this way:
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Byte Number
1 Counter (increased to send the new CAN message)
2 ID of the CANopen node to interrogate
3÷4 Index of SDO
5 SubIndex of SDO
6÷9 Data to write (set to '0' in case of reading request)
Most Signifcant bit  0: W; 1: R
10
Bit 6, 5, 4, 3, 2, 1, 0  Number of bytes to write
Byte Number
1÷4 Data read (in case of reading)
5 Status of request (1  OK; 2  Not OK)
User Manual SNMP Agent / CANopen
Document code: MN67156_ENG
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