Communication Sequence For The Version S-7.A.5 Profile - Burkert 8791 Manuel D'utilisation

Bit configuration
1. Output set-point value (Value range 0 – 10.000, is equivalent to 0 – 100 %)
2. Input feedback
14)
0 0 D13
parameter bit
Output
Table 33: Bit configuration
15.4 communication sequence for the version
s-7.a.5 profile
1. Following start-up, the AS interface master (from master class 4) automatically replaces the ID object with the
S-7.A.5 slave
Master transmits 3 bytes:
1. Byte: Code
2. Byte: Index
3. Byte: Length =
2. Then the following cyclical commands can be used:
Code = 0 (get cyclic data from Slave)
→ for feedback 0 – 100 %
Code = 1 (put cyclic data to slave)
→ for set-point value 0 – 100 %
Only for version with S-7.A.5 profile
14)
66
(Value range 0 – 10.000, is equivalent to 0 – 100 %)
Byte 2
D12 D11 D10 D9
p3 p2
not used not used
S-7.A.5 slave replies with 6 bytes
= 16 dez
= 0 dez
5 dez
or with 2 bytes (Read Response not OK)
english
D8 D7 D6 D5
p1
not used
1. Byte: Code
2. Byte: Vendor ID (high)
3. Byte: Vendor ID (low)
4. Byte: Device ID (high)
5. Byte: Device ID (low)
6. Byte: 1 word output +
1 word input
1. Byte: Code
2. Byte: Error Code
Type 8791
AS-Interface
Byte 1
D4 D3 D2 D1
p0
not used
= 80 dez
= 120 dez
= 1 dez
= 34 dez
= 144 dez
= 0 dez (no error)
1 dez (illegal index)
2 dez (illegal length)
3 dez (request not
implemented)
4 dez (busy)
D0