Prosoft-technology MVI69-EGD Manual de usuario Pagina 66

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MVI69-EGD CompactLogix or MicroLogix Platform Reference
GE Ethernet Global Data Communication Module
Page 66 of 96 ProSoft Technology, Inc.
November 3, 2008
Capabilities PDUs
PDU Type = 9
Capabilities Request
The capabilities request PDU command permits an application program to
request the supported capabilities of the EGD implementation on the destination
node. A capabilities request sent from a requesting node must be followed by a
capabilities response message from the responding node.
Packet
Info
Description Data
Source Port:
7937 (0x 1F01)
Destination Port:
7937 (0x 1F01)
Length:
xx bytes (0x 00 XX)
Checksum:
xxxxx (0x XX XX)
EGD's PDU Field: Offset Bytes Hex code
PDU Type:
0 1 0x 09
Message Flag:
1 1 0x HH
Request ID:
2 2 0x HH HH
PVN1:
4 1 0x 01
Reserved:
5 1 0x HH
UDP
EGD:
Message Length:
6 2 0x HH HH
PDU Type = 10
Capabilities Response.
The capabilities response command PDU is sent in response a capabilities
request. This message returns the functional capabilities and limits of the
supported EGD implementation on the responding controller.
Packet
Info
Description Data
Source Port:
7937 (0x 1F01)
Destination Port:
7937 (0x 1F01)
Length:
xx bytes (0x 00 XX)
Checksum:
xxxxx (0x XX XX)
EGD's PDU Field: Offset Bytes Hex code
PDU Type:
0 1 0x 0A
Message Flag:
1 1 0x HH
Request ID:
2 2 0x HH HH
PVN1:
4 1 0x 01
Status:
5 1 0x HH
Message Length:
6 2 0x HH HH
UDP
EGD:
Producer ID:
8 4 0x HH HH HH HH
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