FC 70 - Analog Point Definition (NAMM02 - NAMM03)

The analog point definition function code defines blocks in the NAMM02 and IMAMM03 Analog Master Modules to perform analog input, exception reporting, and alarm functions.

 

This function code is exclusively for blocks one through 64 of the NAMM02 and IMAMM03 Analog Master Modules. This function requires no memory.

 

NOTE: Function code 70 is converted to function code 158 when downloading to an IMAMM03 module. Refer to function code 158 when using an IMAMM03 module.

 

 

Outputs:

Blk

Type

Description

N

R

Value of measured point in engineering units

 

 

Specifications:

Spec

Tune

Default

Type

Range

Description

S1

N

0

I

0 - 255

Input type:

0           = block undefined

1           = S type TC

2           = R type TC

3           = E type TC

4           = J type TC

5           = K type TC

6           = T type TC

7           = Chinese type E TC

8           = Chinese type S TC

9           = unimplemented TC types

10         = U.S. laboratory standard 100 W Pt RTD (alpha = 0.00393)

11         = U.S. industry standard 100 W Pt RTD (alpha = 0.00391)

12         = European standard 100 W Pt RTD (alpha = 0.00385)

13         = 120 W chemically pure, Ni RTD (alpha = 0.00672)

14         = SAMA Standard, 10 W Cu RTD (alpha = 0.00392)

15         = Chinese 53 W Cu RTD (alpha = 0.00425)

16 - 19 = unimplemented RTD types

20         = high level (1 to 5 V)

21-29   = unimplemented high-level types

30         = –20 to +80 mV

31         = (+1 to +5 V) mV input

32         = (+4 to +20 mA) mV input

33-39   = unimplemented mV types

40-255 = not allocated

 

S2

N

0

I

0 - 255

Engineering unit type:

0 = °C

1 = °F

2 = EU conversion (high level and mV only)

3 = square root after EU conversion (high level andmV only)

4 = square root before EU conversion (high level andmV only)

 

S3

N

0

I

0 - 255

Engineering unit identifier

S4

N

0.000

R

Full

Zero

S5

N

0.000

R

Full

Span

S6

N

1.000

R

Full

Significant change in % span

S7

Y

0.000

R

Full

High Alarm Value

S8

Y

0.000

R

Full

Low Alarm Value

S9

N

0.000

R

Full

Lead wire resistance in ohms (not relevant for high levels)

 

 

70.1  Explanation

 

Specifications:

 

S1 - INPUT TYPE

Specification S1 is the input type. This is a code that identifies

the type of input or sensor used for the point. There are

four general types of inputs: thermocouple, RTD, millivolt,

and high level. The codes listed in the specification table

identify specific types of these inputs.

 

S2 - EUTYPE

Specification S2 is the engineering unit type. This is a code

identifying which form the output will take.

0 = degrees Celsius

1 = degrees Fahrenheit

2 = engineering units conversion (high level and millivolt only)

3 = square root after engineering unit conversion (high level and millivolt only)

4 = square root before engineering unit conversion (high level and millivolt only)

 

S3 - EUIDENT

Specification S3 is the engineering unit identifier.

 

S4 - EUZERO

Specification S4 is the engineering unit's zero percent value.

 

S5 - EUSPAN

Specification S5 is the engineering unit's span value (zero to 100 percent).

 

S6 - SIGCHNG%

Specification S6 is the percent of span a point value must change by to cause the generation of an exception report.

 

S7 - HIGH LIMIT

Specification S7 sets the value of high alarm limit.

 

S8 - LOW LIMIT

Specification S8 sets the value of low alarm limit.

 

S9 - LEADWIRE

Specification S9 is the leadwire resistance in ohms, per leg for two wire RTDs, and total for thermocouples (not relevant for high level inputs).