8 Using the Data Record Interface
160
IE/AS−INTERFACE LINK PN IO as of hardware version 1, as of firmware version V2.0
Release 08/2018
C79000−G8976−C216−03
8.2.2.9 Write_Parameter_String
Meaning
With AS-i slaves with profile 7.4, this call can be used to send a parameter string to
the AS-i master that then forwards this to the specified AS-i slave address.
The call transfers a parameter string with a maximum of 220 bytes. The actual
number of parameter bytes to be sent to the AS-i slave is calculated by the AS-i
master from byte 2. The maximum number of parameter bytes is 220.
The remaining information in the string is not evaluated by the AS-i master and is
passed on to the AS-i slave transparently. As long as the string transfer is active,
there is no user/analog data exchange with the addressed AS-i slave.
Structure of the RecordDataWrite service − Index 28
Byte Meaning
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
0 Version_hi = 0x00
1 Version_lo = 0x00
2
Number of string bytes
3 String byte 1
4 String byte 2
... ...
221 String byte 219 (may be irrelevant)
222 String byte 220 (may be irrelevant)
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