CPU 31x-2 as DP Master/DP Slave and Direct Communication
2-26
PLC S7-300, CPU Specifications CPU 312 IFM to CPU 318-2 DP
A5E00111190-01
Station Status 2
Table 2-11 Structure of Station Status 2 (Byte 1)
Bit Meaning
0 1: New parameter assignment and configuration of the DP Slave is
required.
1 1: A diagnostic message has arrived. The DP slave cannot continue
operation until the error has been rectified (static diagnostic message).
2 1: This bit is always “1” when there is a DP slave with this DP address.
3 1: The watchdog monitor has been activated for this DP slave.
4 0: This bit is always “0”.
5 0: This bit is always “0”.
6 0: This bit is always “0”.
7 1: DP slave is deactivated, that is to say, it has been removed from the
scan cycle.
Station Status 3
Table 2-12 Structure of Station Status 3 (Byte 2)
Bit Description
0
to
6
0: These bits are always “0”.
7 1: More diagnostic messages have arrived than the DP slave can
buffer.
The DP master cannot enter all the diagnostic messages sent by the
DP slave in its diagnostic buffer.
To Next Page
Loading...
