Diagnostics Using the User Program
10-12
DP/PA Link and Y Link Bus Couplings
A5E00193841-011
Table 10-7 Meaning of byte x+36 in the status message
Byte x+36
Status Meaning
00
H
OFF There is no data exchange between the IM 157 and the
underlying slaves. The IM 157 can neither receive nor forward
the token.
40
H
STOP There is no data exchange between the IM 157 and the
underlying slaves. The IM 157 can receive and forward the
token
80
H
CLEAR The IM 157 reads the input data cyclically. Output data are
kept in a safe status or are set to ”0”. The IM 157 can receive
and forward the token.
C0
H
RUN
(OPERATE)
The IM 157 reads the input data of the slaves cyclically and
forwards the output data to the slaves. The IM 157 can
receive and forward the token.
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