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Through, Btw word descriptions – Rockwell Automation 1771-CFM,D17716.5.99 CONFIGURABLE FLOWMET User Manual

Page 37

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4–3

Configure the CFM Module

Publication 1771Ć6.5.99 - December 1995

BTW Word Descriptions

Output 0 Trigger selects what

channel characteristic output 0

is triggered ON or OFF by placing

the shown hex values in these bits:

0 = Force OFF

1 = Frequency

2 = % of Fullscale Frequency

3 = Acceleration

4 = Total Value

5 = Direction

6 = Overflow

7 = Prover Running

8 = Prover Range

F = Force ON

Tie Output 1 to Channel ties

output 1 to operate according to

the state of a specific channel.

b08 = Counter 0 b10 = Counter 2

b09 = Counter 1 b11 = Counter 3

15

14

13

12

11

10

09

08

07

06

05

04

03

02

01

00

Total Reset resets the

total count for the

appropriate counter on a 0

to 1 transition.

Only occurs on a change

in bit state from a 0 to a 1.

b00 = Counter 0

b01 = Counter 1

b02 = Counter 2

b03 = Counter 3

Overflow Reset resets the

overflow status of the module for

the appropriate counter on a 0 to 1

transition. Only occurs on a

change in bit state from a 0 to a 1.

b04 = Counter 0 b06 = Counter 2

b05 = Counter 1 b07 = Counter 3

Prover Run Initialize initializes the

channel for prover inputs on the Gate.

Also resets Store Count Value

(BTR words 13 & 14). Only occurs on a

change in bit state from a 0 to a 1.

This bit should remain ON (= 1) until the

prover is done or until the prover run is

aborted.

b08 = Counter 0 b10 = Counter 2

b09 = Counter 1 b11 = Counter 3
If this bit is OFF (= 0), a low to high transition

of the Gate will store the current count in

Store Count Value (BTR words 13 & 14).

Header must be 0010.

Identifies the module as a

CFM module.

T

T, NRT

T, NRT

15

14

13

12

11

10

09

08

07

06

05

04

03

02

01

00

Tie Output 0 to Channel

ties output 0 to operate

according to the state

of a specific channel.

b00 = Counter 0

b01 = Counter 1

b02 = Counter 2

b03 = Counter 3

Output 1 Trigger selects what

channel characteristic output 1

is triggered ON or OFF by placing

the shown hex values in these bits:

0 = Force OFF

1 = Frequency

2 = % of Fullscale Frequency

3 = Acceleration

4 = Total Value

5 = Direction

6 = Overflow

7 = Prover Running

8 = Prover Range

F = Force ON

Tie Output 3 to Channel ties

output 3 to operate according to

the state of a specific channel.

b08 = Counter 0 b10 = Counter 2

b09 = Counter 1 b11 = Counter 3

15

14

13

12

11

10

09

08

07

06

05

04

03

02

01

00

Tie Output 2 to Channel

ties output 2 to operate

according to the state of

a specific channel.

b00 = Counter 0

b01 = Counter 1

b02 = Counter 2

b03 = Counter 3

word 3

word 2

word 1

0

0

1

0

all

T, NRT

DS

T, NRT

all

Output 3 Trigger selects what

channel characteristic output 3

is triggered ON or OFF by placing

the shown hex values in these bits:

0 = Force OFF

1 = Frequency

2 = % of Fullscale Frequency

3 = Acceleration

4 = Total Value

5 = Direction

6 = Overflow

7 = Prover Running

8 = Prover Range

F = Force ON

Output 2 Trigger selects what

channel characteristic output 2

is triggered ON or OFF by placing

the shown hex values in these bits:

0 = Force OFF

1 = Frequency

2 = % of Fullscale Frequency

3 = Acceleration

4 = Total Value

5 = Direction

6 = Overflow

7 = Prover Running

8 = Prover Range

F = Force ON

all

T, NRT, HR

all

T, NRT

DS

T, NRT

all

all

T, NRT, HR

all

T, NRT

DS

T, NRT

all

all

T, NRT, HR

all

T, NRT

DS

T, NRT

all

all

T, NRT, HR