Function Block Do - Pepperl+Fuchs FD0-VC-Ex4.FF Manual

7.4

Function block DO

Diagnosis messages
Problem
Parameter
BLOCK_ERR Block Configuration
Miscellaneous
Problem
The function block does not leave
the "Out of Service" mode
The value of OUT_D is displayed in
READBACK_D instead of the value
fed back by the transducer block
The value of OUT_D is not trans-
ferred to the transducer block
Simulation cannot be activated
Parameters cannot be written
Subject to reasonable modifications due to technical advances.
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Message
The parameter "CHANNEL"
Error has not been assigned a valid
value (1 ... 4).
The function block was not
assigned a schedule.
The target mode of the block is
"RCas" and "SHED_OPT" is at
"undefined".
Input Failure The status of PV_D is "bad".
Output Failure There is an error in the trans-
ducer block which affects the
output.
Simulate Simulation for this block is acti-
vated.
Local Override The reference value has been
overwritten by the safety value
via the bus due to as missing
reference value specification.
Out of Service The block is in "Out of Service"
mode.
There is a block configura-
tion error which is signalled
in "BLOCK_ERR".
The resource block is in
"Out of Service" mode.
The option "readback sup-
ported" in parameter
"FEATURES_SEL" of the
resource block is not set.
Simulation is ON.
The simulation switch is not
switched ON.
Write protection activated.
Fieldbus Valve Coupler FD0-VC-Ex4.FF
Error detection and problem solutions
Elimination of error
Cause
Assign valid value (see section
6.3).
Include the function block in a
function block application and
load this in the device.
Assign valid value, e. g. "Normal
Schedule - Normal Return".
• Check the value fed back by the
• Check diagnosis message of
Check diagnosis message of
transducer block (section 7.3).
See section 5.4.2 and appendix
B.
• Check communication.
• Check device which specifies
• Select suitable target mode.
• Check block configuration error.
Cause Elimination
See "Diagnosis
messages".
Set resource block
into "AUTO" mode.
Set option.
Switch OFF simula-
tion.
Check in resource
block whether the
simulation switch is
ON; switch ON, if
necessary.
Deactivate write
protection.
Copyright Pepperl+Fuchs, Printed in Germany
Elimination
transducer block.
transducer block.
the reference value.
Cross
reference
See "Diagnosis
messages".
See also section
7.2.
See also section
5.4.2.
See section
5.4.2 and
appendix C.
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