Pepperl+Fuchs FD0-VC-Ex4.FF Manual page 38

If the used control system supports alarm messages via the F
the block alarm is transferred via the bus to the control system. As this function is currently not supported
by all control systems, the valve coupler has a second possibility to display faults:
As soon as the transducer block recognises a fault, a message is set in parameter "BLOCK_ERR" of the
connected DO function block. Normally, this parameter is read out and evaluated in cycles by control sys-
tems which do not support alarm messages via F
trol (e. g. lead breakage of valve feeding lead or exceeding the admitted valve transit time), the message
"Output Failure" is set. If the final position feedback fails (e.g. lead short circuit of PFC feeding lead), the
message is "Input Failure".
All messages, except a configuration error, are transferred by this mechanism. Therefore check after each
modification of parameterisation of the valve coupler that this message is not set in parameter
"BLOCK_ERR".
If the control system used does not support alarm messages via F
vate the option "reports" in parameter "FEATURES_SEL" of the resource block.
Subject to reasonable modifications due to technical advances.
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Fieldbus Valve Coupler FD0-VC-Ex4.FF
Parameterisation and operation of the valve coupler
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fieldbus. If the fault is related to the valve con-
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fieldbus, setting and resetting of
fieldbus, deacti-
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Copyright Pepperl+Fuchs, Printed in Germany