Siemens CP 243-2 - Manual (Page 95)

Command Interface
5-27
SIMATIC NET CP 243-2 AS-i Master
C79000-G8976-C142/02
5.2.15 Get_AS-i_Slave_Status
Purpose
With this call, the status register of the addressed AS-i slave can be read out.
Depending on the type of AS-i slave, the flags of the status register have the
following meaning:
Status
Bit AS-i slave complying with standard 2.0 AS-i slave complying with standard
2.1
S 0 Address volatile “Address/ID code volatile”
This flag is set
when the internal AS-i slave routine for permanent storage of the AS-i slave
address is active. This can take up to 15 ms and must not be interrupted by a
further addressing call.
when the AS-i internal slave address comparison recognizes that the stored
address is not the same as the entry in the address register.
S 1 Parity error detected
This flag is set when the AS-i slave has
recognized a parity error in a received
frame since the last “read and delete
status” job.
I/O error detected
An AS-i slave can set this flag when
it has detected and error (for
example wire break) in the attached
I/Os.
S 2 End bit error detected
This flag is set when the AS-i slave has
recognized an end bit error in a frame
since the last “read and delete status” job.
reserved
S 3 Read error in non-volatile memory
This bit is set when the AS-i slave has detected a read error when reading the
non-volatile memory.
Structure of the Job Data in the Send Buffer
Bank Byte Meaning
2 0 Command number: 0F
H
2 1 AS-i slave address