Danfoss VLT MCA 121 EtherNet/IP, Руководство пользователя

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5.1.2 EtherNet/IP Connections
The MCA 121 option supports the CIP connections described in the following sections:
5.1.3 Class 1 connection
I/O connection using TCP transport. Maximum one Class 1 connection is supported by the EtherNet/IP option, but several listen only connection can be
established if multicast is selected as Transport type. This type of connection is used for cyclic I/O and Change-Of-State connections. The connection is
established with a
Forward Open command, containing the following information:
Transport Type:
Specified for both directions:
- Originator-to-Target / Target-to-Originator.
- Point to Point
- Multicast (Target-to-Originator only)
Data Size:
Specified (in bytes) for both directions: Originator -> Target / Target -> Originator.
The data-size depends on the assembly-instance chosen in:
Destination
.
Instances (decimal) Data Size
Originator
→
Target Target
→
Originator
20, 21, 100 70, 71, 150 4 bytes
101 151 8 bytes
103 153 20 bytes
Packet Rate:
Specified (in milliseconds) for both directions: Originator -> Target / Target -> Originator.
Minimum packet rate supported:
1 ms
Production Inhibit Timeout:
Specifies (in milliseconds) the timeout-time for both directions.
Trigger:
Selects the transport trigger type:
- Cyclic (Data is transmitted cyclically as polled I/O)
- Change Of State (Data is transmitted on Change of State only. COS-filters are set-up in par. 12-38 COS Filters)
Connection Points
Specified for both directions: Originator -> Target / Target -> Originator.
Profile
(par.8-10 Control Word Profile )
Direction Connection Points
(decimal)
ODVA
Originator
→
Target 20, 21
Target
→
Originator 70, 71
FC
Originator → Target 100, 101, 103
Target → Originator 150, 151, 153
5 How to Control MCA 121 EtherNet/IP
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