ABB 2600T Series - Page 91

2600T SERIES | PRESSURE TRANSMITTERS | OI/266/FF-EN REV. E
91
Idx Parameter Description / Range / Selections / Note
 BLOCK_OBJ
In the Block Object data structure, there are different items describing the block characteristics. Execution period, Number
of parameters in the block, the DD Revision, Profile Revision, View Objects characteristics and so on
 ST_REV
The revision level of the Static data associated with the Function Block. The revision level is incremented each time a static
parameter value (S – under Storage) in the block is changed.
 TAG_DESC The user description of the intended application of the block
 STRATEGY The strategy field can be used to identify grouping of blocks. This data is not checked or processed by the block.
 ALERT_KEY The identification number of the plant unit. This information may be used in the host for sorting alarms, etc.
 MODE_BLK
TARGET AUTO / MAN / CAS / RCAS / ROUT / OOS The selectable modes by the operator.
ACTUAL The mode the block is currently in.
PERMITTED AUTO/MAN/OOS/IMAN/CAS/RCAS/ROUT/LO Allowed modes that the target may take on
NORMAL AUTO / CAS The common mode for the Actual.
 BLOCK_ERR
This parameter reflects the error status associated with the hardware or software components associated with a block. It
is a bit string, so that multiple errors may be shown.
 PV The process variable used in block execution, expressed in PV_SCALE unit Code
 SP
The analog Set Point value of this block,
expressed in PV_SCALE Unit Code

 OUT The block output value calculated as a result of
the block execution, expressed in OUT_SCALE
unit code
Writeable only if MODE_BLK.ACTUAL = MAN
 PV_SCALE The high and low scale values, engineering units code, and number of digits to the right of the decimal point to be used in
displaying the PV parameter and parameters which have the same scaling as PV.
 OUT_SCALE The high and low scale values, engineering units code, and number of digits to the right of the decimal point to be used in
displaying the OUT parameter and parameters which have the same scaling as OUT.
 GRANT_DENY
 CONTROL_OPTS
Options the user may select to alter the calculation done in a control loop
 Bypass Enable
 SP-PV Track in Man
 SP-PV Track in ROut
 SP-PV Track in LO or IMan
 SP Track retained target
 Direct Acting
 Track if Bad TRK_IN_D
 Track Enable
 Track in Manual
 Use PV for BKCAL_OUT
 Obey limits if CAS or RCAS

No out limits in Manual
Idx Parameter Description / Range / Selections / Note
 STATUS_OPTS
Options which the user can select for the block processing of status. The available selections are:
 Initiate Fault Sate if BAD IN
 Initiate Fault Sate if BAD CAS_IN
 Use Uncertain as Good
 Target to Manual if BAD IN
 Target AUTO if BAD CAS_IN
 Target to Man if BAD TRK_IN_D
 IFS if BAD TRK_IN_D
 IN
The Primary Input Value for the block coming from another block. Expressed in PV_SCALE Unit
 PV_FTIME 
Time constant of a single exponential filter for the PV, expressed in seconds. This is the

 BYPASS
The normal control algorithm may be bypassed trough this parameter. When bypass is set, the set point value (in percent) will be
directly transferred to the output.
 OFF
 ON
 CAS_IN Remote set point value from another block. Expressed in PV_SCALE Unit Code
 SP_RATE_DN

Expressed in PV_SCALE Unit per seconds
Ramp rate at which downward setpoint changes are acted on in Auto mode, in PV units
per second. If the ramp rate is set to zero, then the setpoint will be used immediately.
For control blocks, rate limiting will apply only in Auto.
 SP_RATE_UP
Ramp rate at which upward setpoint changes are acted on in Auto mode, in PV units per
second. If the ramp rate is set to zero, then the setpoint will be used immediately. For
control blocks, rate limiting will apply only in Auto.
 SP_HI_LIM

Expressed in PV_SCALE Unit
The setpoint high limit is the highest setpoint operator entry that can be used for the
block.
 SP_LO_LIM
The setpoint low limit is the lowest setpoint operator entry that can be used for the
block.
 GAIN 
The proportional gain value.
 RESET 
The integral time constant, expressed in seconds per repeat
 BAL_TIME 
The specified time for the internal working value of bias to return to operator set bias.
Also used to specify the time constant at which the integral term will move to obtain
balance when the output is limited and the mode is AUTO, CAS, or RCAS. Expressed in
seconds
 RATE 
The derivative action time constant expressed in seconds
 BKCAL_IN
The analog input value from another block’s BKCAL_OUT output that is used to prevent reset windup and to initialize the control loop.
Expressed in OUT_SCALE Unit Code
 OUT_HI_LIM

Expressed in OUT_SCALE Unit
Limits the maximum output value.
 OUT_LO_LIM
Limits the minimum output value.
 BCAL_HYS

percent of the OUT_SCALE span
The amount that the output must change away from its output limit before the limit
status is turned off.
 BKCAL_OUT Expressed in PV_SCALE Unit
Value and status required by an upper block’s BKCAL_IN so that it may prevent reset
windup and provide bumpless transfer to closed loop control.
 RCAS_IN
Expressed in PV_SCALE Unit
Used when mode is RCAS
Target setpoint value provided by a supervisory host.