54 NETLink
®
Ethernet Products
A: The default settings of the system parameters in register SI-
MATIC S7 for Cycle Formation, Sign-of-Life Monitoring and CPU-Stop
Monitoring must be deactivated.
Q: How can I specify the target station(s) for RFC 1006 communi-
cations in WinCC by using the Rack/Slot fields?
A: Since the RFC protocol does not have a default entry for speci-
fying the PROFIBUS/MPI address of a target station (PLC), you
will have to use the 2 byte-long TSAP field. The first byte of the
TSAP ID is the rack value, while the second is the slot value (the
value range for the slot field will often have a maximum value of
31, e.g., in WinCC).
This is why the NETLink
®
unit will have to evaluate both of the
TSAP field bytes in order to determine the address of the target
station.
Scenario 1: Your application allows slot field values of up to 126
---> You will have to enter “0” into the Rack field and the PROFIBUS
address of your CPU into the Slot field.
Scenario 2: Your application only allows slot field values of up to 31
---> You will have to enter a 32x multiplier into the Rack field and the
missing remainder of the PROFIBUS address into the Slot field.
Address assignments using the Rack and Slot input fields:
Example 1: Entry for address 17 ≙ Calculation: (0* 32 + 17)
Example 2: Entry for address 34 ≙ Calculation: (1* 32 + 2)
Example 3: Entry for address 69 ≙ Calculation: (2* 32 + 5)
Q: What adjustments must be made in the MCT10 software to re-
alize a communication with Danfoss controllers?
To Next Page
Loading...
