3 status byte (input register 8di) – Siemens CP 243-2 User Manual
Page 36
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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).
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