Pepperl+Fuchs AS-I 3.0 PROFINET, Руководство пользователя

Страница: 48 / 72

3
1
.1
.20
1
4
48
AS-i 3.0 PROFINET Gateway in Stainless Steel
Configuration of AS-i/PROFINET Gateways
16-bit data
In addition to the access via the command interfaces, the 16-bit data for or by the
slaves with 16-bit value can by exchanged cyclically (profile 7.3., S-7.4, S-6.0, S-
7.5, S-7.A.8, S-7.A.9, S-7.A.A). Competing writing access attemps on 16-bit out-
put data will not be blocked by every other. If 16-bit output data for a particular sla-
ve are being transmitted both cyclically and acyclically with the command inter-
face, the acyclically transmitted values will be overwritten by the cyclically
transmitted values.
AS-i 16-bit data can be transmitted in a reserved data area. Therefore accessing
16-bit data is as easy as accessing digital data.
16-bit value
16-bit value
2
15
2
14
2
13
2
12
2
11
2
10
2
9
2
8
2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
word 1 channel 1
word 2 channel 2
word 3 channel 3
word 4 channel 4
Tab. 10-13.
Information!
A-slaves map the data on channels 1 and 2.
B-slaves map the data on channels 3 and 4.