FC 133 - Smart Field Device Definition

The smart field device definition function code implements ABB FSK smart transmitters, smart positioners, and other smart field devices with defined specifications. The controller verifies the configuration of the field device at startup. Three specifications can be modified while the controller is in execute mode. In execute mode, the controller gets and monitors the value of the process variable defined in this function code.

 

Outputs:

Blk

Type

Description

N

B

Transmitter status:

0 = good

1 = bad

 

 

 

Specifications:

Spec

Tune

Default

Type

Range

Description

S1

N

2

I

Note 1

Block address of field device input

S2

N

0

I

0 - 2000

Field device definition

S3

N

0

I

Full

Engineering units of field device

S4

Y

0.000

R

0.0 - 32.0

Damping time (secs)

S5

N

0

I

0 - 12

Mode definitions

S6

Y

0

I

0 - 6

Operation select:

0 = normal

1 = zero up (uses operation trigger <S7>)

2 = zero down (uses operation trigger <S7>)

3 = span up (uses operation trigger <S7>)

4 = span down (uses operation trigger <S7>)

5 = fix output (fix position of type AVS positioner)

6 = download configuration

S7

N

0

I

Note 1

Block address of operation trigger

S8

Y

0.000

R

Full

Percentage of fixed output/position

S9

Y

0

I

0 - 102

Communication select (all) and temperature compensation definition (TBN only)

S10

N

0

I

0 - 17

Field device output definition

S11

N

0.000

R

Full

Spare

S12

Y

0

I

1 - 255

Field device address or channel number

S13

N

0.000

R

Full

Lower Range

S14

Y

0.000

R

Full

Upper Range

 

NOTES:

1. Maximum values are:9,998 for the BRC-100, IMMFP11/12 and 31,998 for the HAC

 

 

133.1  Explanation

 

133.1.1  Specifications

 

S1

Block address of the input. This input must be linked to the analog input/slave block (function code 132).

 

S2

Field device definition.

Field Device Type:

 

 

 

NOTES:

  1. Every type AVS positioner connected to the bus must have the first channel be position feedback. Specification S3 through the end are ignored on all channels other than position feedback. The engineering units of position feedback channel dictate the units used to report all pressures. Valid units for these pressures are psi and bars.

  2. A maximum of five variables may be configured for any one type AVS positioner or other future multivariable device.

 

3.  Every flowmeter connected to the bus must have the first channel be volume flow or mass flow rate. SpecificationS3 through the end are ignored on all channels other than volume flow or mass flow rate.

 

 

S3

Engineering units of the field device. Table 133-2 lists the available engineering units for specification S3.

 

 

S4

Defines the damping time and is adjustable from 0.0 to 32.0 seconds (0.0 to 5.0 seconds for AVS devices). The damping time is defined as the time required for an analog or digital response to a step input change to reach approximately 62% of its final value.

 

S5

Mode definition.

 

                              

NOTE: Specification S5 is not applicable to the type AVS positioner. The type AVS positioner must be connected to the actuator such that an open (0 current) input provides the desired failure and initial position (0 or 100%). Specification S5 should always be 00.

 

S6

Operation select.

0 = normal

1 = zero up (uses operation trigger <S7>)

2 = zero down (uses operation trigger <S7>)

3 = span up (uses operation trigger <S7>)

4 = span down (uses operation trigger <S7>)

5 = fix output (fix position of type AVS positioner)

6 = download configuration

 

The operation select input allows the modification of the field device calibration. To adjust calibration:

  1. Select level to adjust with S6 (S6=1, 2, 3 or 4).

  2. Trigger the adjustment with <S7>. Each zero to one transition of <S7> changes the selected operation by approximately 0.025%. This allows adjustment of the 4 mA or 20 mA value when the span is at 0% or 100%.

 

Operation select can also fix the transmitter output or positioner internal set point at the percentage defined by S8. Setting S6 to five fixes the output. Setting S6 to zero resumes normal operation. The field device receives the downloaded configuration when S6 is set to six. When installing a new field device, this operation forces the field device configuration to match the defined specifications.

For type AVS positioner, zero and span adjusts the 4-20 mA position output option.

 

S7

Block address of the operation trigger. Each zero to one transition changes the selected operation (S6) by approximately

0.025%.

 

S8

Value of the fixed output (percentage). Refer to S6.

 

S9

Temperature compensation definition for TBN transmitters and communication select function for all field devices.

 

                                     

 

NOTE: Although specification S9 is tunable, tuning it does not affect field device configuration, only communication select.

 

S10

Transmitter output or positioner input characterization and normal/reverse definition.

 

                                               

NOTE: Action for flow meters is flow direction relative to arrow on primary.

 

S11

Spare.

 

S12

Field device address. Valid addresses are from one to 15. In point to point mode, this is the channel number the transmitter is connected to on function code 132. When this specification is zero, the engineering unit values stored in corresponding function code 132 blocks are used as field device lower and upper range values. EU zero is used as field device lower range and the difference of the EU span and EU zero is used as field device upper limit.

 

NOTE: When multiple values from one smart field device are brought into function code 132, specification S12 (the address) of function code 133 should be the same for each variable.

 

 

S13

Field device lower range. If S12 is a valid address (one to 15), this specification is compared with the lower range value stored in the field device. This specification value is downloaded to the field device when this specification is tuned. This value is also downloaded to the corresponding field device when the download configuration option is selected (S6).

 

S14

Field device upper range. This is the upper range value of the configuration. If S12 is a valid field device address (one to 15), this specification is compared with the upper range value stored in the field device. This specification value is downloaded to the field device when this specification is tuned. This value is also downloaded when the download configuration option is selected (S6).

 

 

 

133.2   Application

 

Figure 132-6 shows the block numbering configuration for analog input/slave (function code 132) linked to smart field device definition (function code 133) function blocks.

Figures 133-7 and 133-8 show how the smart field device definition block could be used in typical applications.

 

 

 

In Figure 133-8, specification S1 of the smart field device definition block defines the input value and the I/O module to utilize for communications. When a tunable specification is changed, the new value is sent to the transmitter by this link.  The remote control memory and timer blocks are set up to produce a zero to one transition on the operation trigger input <S7>. Each zero to one transition on <S7> changes the selected operation by 0.025 percent. This configuration allows the fine adjustment of the transmitter 4 mA or 20 mA values.

 

SMARTPORT requires 33 consecutive block addresses in the controller for each I/O module (up to 15 input devices per I/O module).

 

The default block address of 33 consecutive blocks for each I/O module is calculated as follows:

Default starting block address = (I/O module address x 33) + 7000

 

 

133.3  Type AVS Positioner Application

 

The type AVS positioner is an output device and therefore has unique application abilities. The type AVS positioner device status information is reported through the position feedback block only. The only time the other outputs will go bad quality is if the device is not responding to the FBS module. The type AVS positioner is only supported in full digital field bus mode. When configuring a type AVS positioner, refer to the note on ranges located under specification S6 of function code 132.

 

Figure 133-9 shows how the smart field device definition block should be used with a type AVS positioner in a typical application.

 

 

133.4  Flowmeter Application

 

Figure 133-10 shows how to configure the analog input/slave (function code 132) linked to smart field device definition (function code 133) for the multirange capability of the ABB flowmeters. It requires the use of a digital signal generated by the flowmeter itself, indicating which range is active.  Assume the flowmeter is configured for one forward and one reverse range as follows:

 

 

The value of zero is fixed always. The flowmeter indicates which range is being used via a contact output. This must be tied into the DCS via a digital input function block. Refer to the function block algorithm shown in Figure 133-10.