Siemens CP 243-2 User Manual

Command Interface

5-54

SIMATIC NET CP 243-2 AS-i Master

C79000-G8976-C142/02

With this call, a parameter string complying with AS-i slave profile 7.4 can be sent
to the AS-i master that passes on the string to the AS-i slave address specified in
the send buffer.

With this call, a send buffer with a maximum of 223 bytes is transferred to the AS-i
master. The actual number of parameter bytes to be sent to the AS-i slave is
calculated by the AS-i master from byte 2 of the send buffer (number of parameter
bytes).

The 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.

2

0

40 

H

2

1

Slave address

2

2

Number of parameter bytes

2

3

String byte (1)

2

4

String byte (2)

...

...

.....

...

...

String byte (n–1)

...

...

String byte (n)

Maximum value for n=220

2

0

Echo of the command number: 40 

H

2

1

Command status