ProSoft Technology MVI69-EGD User Manual
Page 74
MVI69-EGD ♦ CompactLogix or MicroLogix Platform
Reference
GE Ethernet Global Data Communication Module
Page 74 of 96
ProSoft Technology, Inc.
November 3, 2008
PDU Type = 35
Write Response.
The write response is returned from a destination controller in response to a write
request message. It serves as an acknowledgment for the original request. A
positive response indicates that all of the data has been written to the responding
device. An error response indicates that one or more of the transfers to the
responding device failed. Responders shall use all available means to assure
that a write is performed in its entirety or not performed at all. Requesting
applications are advised that if partial failures of the write can cause problems
with the control algorithm, they should include only one cell in each write to
assure complete knowledge of the disposition of the write request.
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 23
Message Flag:
1
1
0x HH
Request ID:
2
2
0x HH HH
PVN1:
4
1
0x 01
Option Length:
5
1
0x HH
Message Length:
6
2
0x HH HH
Configuration
Signature:
8
2
0x HH HH
Address Type:
10
1
0x HH
Cell count:
11
1
0x HH
Producer ID:
12
4
0x HH HH HH HH
Exchange ID:
16
4
0x HH HH HH HH
Time Stamp:
20
8
0x HH . . . HH
UDP
EGD:
Reserved:
28
4
0x HH HH HH HH