Allen-Bradley DeviceNet 1761-NET-DNI, Руководство пользователя, Страница: 39 / 101

1761-6.5
DNI Configuration Parameters and Programming Notes 5-5
Input Split Point Example:
We need 4 (3.5 data + 0.5 status) words of slave data that the master will
own, and we need to configure an additional 15 words so that other
DeviceNet products can read data.
•
Input Size = 19
•
Input Split Point = 4
The DNI’s input image will consist of:
The minimum value allowed for the split point is 1, if the Input Size
parameter is 32 (the maximum), the resulting range of explicit input words
would be 0x70 to 0x8E.
See "Input Assembly Data (Explicit, Split Point, and Slave)" on page 6-14
for more information.
DNI’s Input Image
Word Instance ID
0 Master’s Slave Data and Status
0x64
1 Master’s Slave Data
2 ↓
3 Master’s Slave Data
Split Point
4
Explicit Input Data 0x70 You can use
0x66 to access
the entire
configured
explicit
assembly.
5 ↓ 0x71
6 ↓ 0x72
7 ↓ 0x73
8 ↓ 0x74
9 ↓ 0x75
10 ↓ 0x76
11 ↓ 0x77
12 ↓ 0x78
13 ↓ 0x79
14 ↓ 0x7A
15 ↓ 0x7B
16 ↓ 0x7C
17 ↓ 0x7D
18 Explicit Input Data 0x7E
AB Parts