Beckhoff FC3101, Documentation

Page: 36 / 76

FC310x as master
FC3101 and FC3102 36 Version: 3.0
3.6.5 S5-FDL Communication
FDL-AGAG communication is possible with S5 controllers or with other PROFIBUS FDL devices. The
following specifications apply here to the PROFIBUS SAPs:
FC310x sends
SDA request with DSAP = station a 1 of the FC310x and SSAP = station a 1 of the other
FDL device. Data corresponds to the data length passed with the ADS write. The SDA telegram is only sent
when there is a call to ADS write:
ADS-Write parameters Meaning
Net-ID
Net-ID of the master (see the device's ADS [
}
28] tab)
Port station address of the other FDL device
IndexGroup 0x01000000
IndexOffset 0
Length Length of the data that is to be written
Data In request: data that is to be written
Other FDL device sends:
SDA request with DSAP = station a 1 of the other FDL device and SSAP = station a 1 of
the FC310X. Data corresponds to the data length set at the other FDL device. The FC310x temporarily
stores the received data which can be read by ADS read:
ADS-Read parameters Meaning
Net-ID
Net-ID of the master (see the device's ADS [
}
28] tab)
Port station address of the other FDL device
IndexGroup 0x01000000
IndexOffset 0
Length Length of the received data
Data In response: received data. There is a receive counter at the end of the received
data that is incremented with every reception
ADS-Read parameters Meaning
Net-ID
Net-ID of the master (see the device's ADS [ } 28] tab)
Port station address of the other FDL device
IndexGroup 0x04000000
IndexOffset Station address of the other FDL device * 2
Length 2
Data In response: receive counter, incremented with each reception