Flowserve 3400IQ Digital Positioner - Manual (Page 109)

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Logix 3400IQ Digital Positioner FCD LGENIM3402-00 – 0/07
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10.6 Clearing Block Configuration Errors
Clearing Block Configuration Errors
Table 10.8 and Table 10.9 list the parameters in the AO and PID blocks which can cause the status
bit of block configuration error to be set in their respective BLOCK_ERR parameters. The tables also
provide the initial values and the valid range for the parameters.
NOTE: Block configuration errors can only be cleared if the function block is being executed
(running). One way of determining block execution is by doing a series of two or three reads of the
BLOCK_TEST parameter and confirming that the first byte of the parameter is incrementing. This will
work if the execute rate is fast relative to the speed of reading BLOCK_TEST. A very slowly executing
block may not appear to execute because block parameters are updated only when the block
executes.
Table 10.8 AO Block Parameters
Parameter Initial Value Valid Range Corrective Action
ALERT_KEY 0 non-zero Initial value is a configuration
error. Set value to non-zero
number.
SIMULATE 1 (disabled) 1-2 (disabled -enabled) Set value in valid range.
XD_SCALE 0 to 100 EU_100 > EU_0, UNITS_
INDEX matches output of
transducer block
Set values to valid range(s).
CHANNEL 0 1-2 Initial value is a configuration
error. Set value to valid range.
SP_RATE_DN
SP_RATE_UP
+INF 0-15 Set value to valid range.
SP_HI_LIM, 100 0-100 Set value to valid range.
SP_LO_LIM 0 0-100 Set value to valid range.
SHED_OPT 0 1-8 (see Shed Options in the
FF specs.)
Initial value is a configuration
error. Set value in valid range.
BYPASS 0 1:OFF, 2:ON Initial value is a configuration
error. Set value in valid range.
SHED_OPT 0 1-8 (see Shed Options in the
FF specs.)
Initial value is a configuration
error. Set value in valid range.
HI_HI_LIM HI_LIM +INF
+INF PV_SCALE, +INF Values must be set in rank order
(e.g. LO_LIM > LO_LO_LIM but <
HI_LIM etc.)
LO_LIM LO_LO_LIM -INF
-INF
PV_SCALE, -INF Values must be set in rank order.
OUT_HI_LIM
OUT_LO_LIM
100
0
OUT_SCALE +/- 10% Verify that OUT_HI_LIM >
OUT_LO_LIM.
SP_HI_LIM SP_LO_LIM 100
0
PV_SCALE +/- 10% Verify that SP_HI_LIM >
SP_LO_LIM.