Technical data

When the CP is starting up, the lower two bits of the status word are set to
"set clock" and "read clock" not possible. During normal operation, these
bits are set according to the CP clock status.
After the HDB has been run through successfully (Receive or Send), the
number of accepted or transferred data is entered in the length word.
Receive possible
Job active
0 0
0 1
1 0
1 1
Set clock
yes
yes
no
no
Read clock
no
yes
no
yes
06H..0FH free
ANZW
Length word
Identifier
X X
Fig. 13.5 ID in the Status Word of the Handling Blocks (HDBs)
C8976060/02 Clock Services
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