Communication Sequence For The Version S-7.A.5 Profile - Alfa Laval TopControl Basic Manuel D'utilisation

Type 8694
AS-Interface installation
Bit configuration
1. Output set-point value (Value range 0 – 10.000, is equivalent to 0 – 100 %)
2. Input feedback (Value range 0 – 10.000, is equivalent to 0 – 100 %)
18)
Byte 2
0 0 D13 D12
parameter bit p3
Output not used
Table 23: Bit configuration
11.4. 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 = 16 dez
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 cylic data to slave)
→ for set-point value 0 – 100 %
Only for version with S-7.A.5 profile
18)
D11 D10 D9 D8
p2
not used
S-7.A.5 slave replies with 6 bytes
1. Byte: Code
0 dez 2. Byte: Vendor ID (high)
5 dez 3. Byte: Vendor ID (low)
4. Byte: Device ID (high)
5. Byte: Device ID (low)
6. Byte: 1 word output +
or with 2 Byte (Read Response not OK)
1. Byte: Code
2. Byte: Error Code
Byte 1
D7 D6 D5 D4
p1
not used
=
= 120 dez
=
1 word input =
= 144 dez
=
English
D3 D2 D1 D0
p0
not used
80 dez
1 dez
34 dez
0 dez (no error)
1 dez (illegal index)
2 dez (illegal length)
3 dez (request not
implemented)
4 dez (busy)
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