4 Commissioning
BU 0250 en-3021 69
Supplement to plug connector option ”-ASI“ or “-AUX”
The FI is designed as a double slave and supports the CTT2 protocol. For this, two AS interface
slaves (1st slave and 2nd slave) are integrated into the device. Both slaves are type A/B slaves.
A separate address in the extended address range (1A … 31A or 1B … 31B) must be assigned to
each of the two slaves. Duplicate addresses must not be assigned.
The following types of communication can be implemented due to the double slave version:
• Cyclic data exchange:
– 1. Slave: • 4I / 4O
– 2. Slave: • 1I / 2O (from the point of view of the device)
• Acyclic data exchange:
– 1. Slave: • Not available
– 2. Slave: • Extended data transfer via CTT2 protocol
– Parameter data (PKW)
– Process data (PZD, e.g.: Control word, setpoints, note parameters P509
P510)
Detailed information for the use of the communication types can be found in manual BU0255
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