Burkert Type 8791 - Manual (Page 57)

57
AS-Interface
Bit configuration
1. Output set-point value (Value range 0 – 10.000, is equivalent to 0 – 100 %)
2. Input feedback 14) (Value range 0 – 10.000, is equivalent to 0 – 100 %)
Byte 2 Byte 1
0 0 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
parameter bit p3 p2 p1 p0
Output not used not used not used not used
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
S-7.A.5 slave replies with 6 bytes
1. Byte: Code = 80 dez
2. Byte: Vendor ID (high)
= 120 dez
3. Byte: Vendor ID (low)
4. Byte: Device ID (high)
= 1 dez
5. Byte: Device ID (low)
6. Byte: 1 word output +
1 word input
=
34
dez
or with 2 bytes (Read Response not OK)
1. Byte: Code = 144 dez
2. Byte: Error Code = 0
1
2
3
4
dez (no error)
dez (illegal index)
dez (illegal length)
dez (request not
implemented)
dez (busy)
Master transmits 3 bytes:
1. Byte: Code = 16 dez
2. Byte: Index = 0 dez
3. Byte: Length = 5 dez
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 %
14)
Only for version with S-7.A.5 profile
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Type 8791