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Table 3-1
Coding of the Status Nibble
Status nibble (1st byte of
the digital input data)
Bit 7
Bit 6
Bit 5
Bit 4
1
0
0
0
1
1
1
0
1
1
0
0
0
0
1
0
0
0
0
1
0
0
1
1
0
1
0
1
0
1
1
1
1
0
0
1
1
0
1
1
DP/AS-Interface Link 20E
Release 08/2008
C79000-G8976-C235−01
Startup ID 1:
Following a startup/restart of the AS-i master, the status nibble changes
between the values 1000
B
It is possible to trigger a command with the user program
Startup ID 2:
Following a startup/restart of the AS-i master, the status nibble changes
between the values 1000
B
It is possible to trigger a command with the user program
Reserved for SIMATIC S7 application FC "ASI_3422"
It is possible to trigger a command with the user program
Command processing active
It is not possible to trigger a command with the user program
Command processing is completed. With an asynchronous read job, a
2-byte return value can be fetched by the AS-i master. Two situations
must be distinguished:
The return value is 0: A command without response data was completed
without error
The return value is a value not equal to 0: The command was terminated
with error.(See Table 3-3)
A new command can be triggered by the user program
Command processing was completed without error. Using an
asynchronous read job, 1 byte of response data can be fetched by the
AS-i master.
A new command can be triggered by the user program
Command processing was completed without error. Using an
asynchronous read job, 4 bytes of response data can be fetched by the
AS-i master.
A new command can be triggered by the user program
Command processing was completed without error. Using an
asynchronous read job, 14 bytes of response data can be fetched by the
AS-i master.
A new command can be triggered by the user program
Command processing was completed without error. Using an
asynchronous read job, 16 bytes of response data can be fetched by the
AS-i master.
A new command can be triggered by the user program
Command processing was completed without error. Using an
asynchronous read job, 32 bytes of response data can be fetched by the
AS-i master.
A new command can be triggered by the user program
Using the Command Interface
Meaning
and 1110
.
B
and 1110
.
B
63
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