Anybus CompactCom 40 User Manual

PROFINET Implementation Details 29 (258)
3. Return to the HW Config window. Double click on Port 1 in the Module column. The win-
dow shown to the right will appear. Choose the Options tag. To configure fastest possible
startup, choose transmission medium/duplex TP/ITP 100 Mbps, full duplexand check the
Disable autonegotiationbox.
Fig. 5
4. Repeat for Port 2.
4.9 Address Conflict Detection (ACD)
The Anybus CompactCom 40 PROFINET IRT supports Address Conflict Detection (ACD). This
mechanism involves the following two aspects:
• Initial probing: before using an IP address, the module issues ARP probes to see if the ad-
dress is already in use (three probes with a 100 ms delay).
• Address announcement: after the initial probing, the module issues ARP announcements.
If an IP address conflict is detected, IP address error will be indicated on the Network Status
LED. The module will use address 0.0.0.0. A new address can be configured via the Anybus IP-
config tool.
If Fast Start Up is used, ACD initial probing is automatically disabled to ensure a
fast startup. Address announcement is still used, as it will not affect the actual
startup time.
To enable/disable ACD, seeEthernet Host Object (F9h), p. 203.
Anybus
®
CompactCom
™
40 PROFINET IRT Network Guide SCM-1202-023 EN 1.8

Anybus CompactCom 40 Specifications

General

Brand	Anybus
Model	CompactCom 40
Category	Control Unit
Language	English