Siemens CP 243-2 - Manual (Page 36)

Interface to the User Program in the S7-200 CPU
2-10
SIMATIC NET CP 243-2 AS-i Master
C79000-G8976-C142/02
2.3.3 Status Byte (Input Register 8DI)
Meaning for the User Program
This register shows the status of the CP 243-2 relative to the AS-i master
interface.
Structure of the Status Byte
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
0 ASI_RESP 0 0 0 0 CP_READY ASI_MODE
Description of the Bits
Table 2-1
Bit Value Meaning
ASI_MODE 0 The CP 243-2 is in the protected mode.
1 The CP 243-2 is in the configuration mode.
CP_READY 0 The CP 243-2 is not yet operational after turning on
the power supply. Evaluation of the I/O data or other
information from the CP is not permitted.
1 The CP 243-2 is operational .
ASI_RESP 0/1 Response bit for the AS-i command interface (see
Section 5.1).