Access to the Data of the AS-i Slaves

Data Exchange in the STOP Mode of the S7-22x CPU

In the STOP mode, the S7-22x CPU sets bit PLC_RUN in the digital control area

to ª0º automatically. As a result, the CP 243-2 outputs ª0º data to all binary slaves.

Special Feature of Analog Slaves

If you use analog slaves complying with profile 7.3 or 7.4 the following points apply:

SIn the input direction, the CP 243-2 sets the nibbles assigned to the slaves to ª0º.

SIn the output direction, the CP 243-2 ignores the nibbles assigned to these slaves.

SAccess to the analog data is described in Section 3.1.2.

SIMATIC NET CP 243-2 AS-i Master

3-5

C79000-G8976-C142/02

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Image 53
Siemens CP 243-2 Data Exchange in the Stop Mode of the S7-22x CPU, Special Feature of Analog Slaves