Profichip VPC3+S - Page 68

7 PROFIBUS DP Extensions
68
Revision 1.04
VPC3+S User Manual
Copyright © profichip GmbH, 2012
Byte
Bit Position
Designation
7
6
5
4
3
2
1
0
0
Publisher_Addr
1
Sample_Length
2
:
246
Sample_Data
Figure 7-11: DXBout-Buffer
When reading the Next_DXBout_buffer_Cmd the user gets the information
which buffer ('U' buffer) is assigned to the user after the change, or whether
a change has taken place at all.
Address
Bit Position
Designation
7
6
5
4
3
2
1
0
12H
F
U
N
D
DXBout_Buffer_SM
DXBout_Buffer_SM, Address 0AH:
bit 7-6
F: Assignment of the F-Buffer
00 = Nil
01 = DXBout_Buf_Ptr1
10 = DXBout_Buf_Ptr2
11 = DXBout_Buf_Ptr3
bit 5-4
U: Assignment of the U-Buffer
00 = Nil
01 = DXBout_Buf_Ptr1
10 = DXBout_Buf_Ptr2
11 = DXBout_Buf_Ptr3
bit 3-2
N: Assignment of the N-Buffer
00 = Nil
01 = DXBout_Buf_Ptr1
10 = DXBout_Buf_Ptr2
11 = DXBout_Buf_Ptr3
bit 1-0
D: Assignment of the D-Buffer
00 = Nil
01 = DXBout_Buf_Ptr1
10 = DXBout_Buf_Ptr2
11 = DXBout_Buf_Ptr3
Figure 7-12: DXBout-Buffer Management