Meaning Of The Fct Parameter For Im 308-C As Dp Master - Siemens SIMATIC S5 Manual
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Assignment of the
Table 9-15 lists the settings of the FCT parameter and their significance. The
FCT parameter
two columns on the right show
Table 9-15
Meaning of the FCT parameter for IM 308-C as DP master
FCT =
Meaning
WO
Write Outputs
The FB IM308C transfers the output bytes in the
S5 source area to the DP slave.
RI
Read Inputs
The FB IM308C transfers the input bytes from the
specified DP slave to the S5 target area.
MD
Read Master-
The FB IM308C transfers the master diagnostics
Diagnostics
of the specified IM 308-C to the S5 target area.
SD
Read Slave-
The FB IM308C transfers the slave diagnostics of
Diagnostics
the specified DP slave to the S5 target area.
RO
Read Outputs
The FB IM308C transfers the output bytes of the
specified DP slave to the S5 target area.
GC
Global Control
The FB IM308C triggers the control command
(Global Control) specified by the GCCR parame-
ter.
CC
Check Global
The FB IM308C checks whether the command
Control
specified in the GCGR parameter is still being pro-
cessed.
While ERR = DC
by the control command cannot be read and the
outputs cannot be set.
CS
Change Station
The FB IM308C transfers a new station number to
Number
the DP slave specified in the IMST parameter. The
new station number is specified in the S5 source
area.
XX
Switch to indi-
The FB IM308C fetches the requisite parameter-
rect parameter-
ization data from the data block opened in the
ization
FB IM308C call.
Warning
!
Outputs on the DP slaves may be set inadvertently.
If P-page addressing is selected, station numbers 120 to 123 are illegal. With
Q-page addressing, station numbers 108 to 123 are illegal. If these station
numbers do not exist on the bus, they cannot be addressed through the
FB IM308C.
ET 200 Distributed I/O System
EWA 4NEB 780 6000-02a
IM 308-C – addressing, diagnostics and use of the FB IM308C
which parameters you must set (other relevant parameters) and
which defaults you can leave, because the parameters in question are
irrelevant.
Description
is output, the inputs affected
H
Other relevant pa-
Irrelevant
rameters
parameters
IMST, TYP, STAD,
GCGR
LENG, DPAD
IMST, TYP, STAD,
GCGR
LENG, DPAD
IMST, TYP, STAD,
GCGR
LENG, DPAD
IMST, TYP, STAD,
GCGR
LENG, DPAD
IMST, TYP, STAD,
GCGR
LENG, DPAD
IMST, GCGR, TYP,
STAD, LENG,
DPAD
IMST, GCGR, TYP,
STAD, LENG,
DPAD
IMST, TYP, STAD,
GCGR
LENG, DPAD
–
9-29
9
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