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Flintec, 3 functional description – Flintec FAD-4 User Manual

Page 5

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FLINTEC

Document

Date

Code

Rev.

Page

FAD - 4 DIGITAL LOADCELL JUNCTION BOX

02.05.00

FAD4_2RM

2

5 of 20

3 FUNCTIONAL

DESCRIPTION

All FAD-4 operations are performed via the serial interface, through the use of LESIP Master/Slave serial
interface protocol . The communication standards and timing are described in the LESIP manual. The file types
specific to FAD-4 will be described here. The FAD-4 is always a slave. In principle a number of FAD`s
may be connected in a network microprocessor controlled device.

The communication buffer size is 13 bytes max for Transmitter and Receiver (Half duplex).
Detailed description of the file types and sequences is given in the following pages .

LIST OF FILE TYPES (COMMANDS)

TYPE HEX

DESCRIPTION

TIME

RESPONSE

?

3F

UPLOAD WEIGHT & STATUS

50 ms

STATUS + WEIGHT

A

41 DEADLOAD CAL (ELECTRONIC mV/V)

1.5 sec

Poll slave by using command ‘?’

a

61

DEADLOAD CAL(weights)

16 sec

Poll slave by using command ‘?’

B

42

SPAN CAL (ELECTRONIC, mV/V input)

1.5 sec

Poll slave by using command ‘?’

b

62

SPAN CAL (weights)

16 sec

Poll slave by using command ‘?’

C

43

DOWNLOAD mV/V for each corner

0.1 sec

Poll slave by using command ‘?’

c

63

CALIBRATE CORNERS

16 sec

Poll slave by using command ‘?’

d

64

UPLOAD AUDIT TRAIL CNT,CALLOCK

0.1sec

6 Digit counter, status Callock

f

66

UPLOAD CORNER FACTORS

0.1 sec

FACTOR 1,2,3 ,4

G

47 GROSS

0.1sec

NONE

H

48 RESERVED

i

69

UPLOAD INTERNAL RESOLUTION

0.1 sec

INTERNAL DIVIDIONS

J

4A

LOCK / UNLOCK CALIBRATION

0.1sec

6 Digit PIN or NAK

P

50

DOWNLOAD PAR 1/ PAR 2/ PAR 3

0.1 sec

ACK or NAK

p

70

UPLOAD PAR 1/ PAR 2/ PAR 3

0.1 sec

PAR 1/2/3

Q

51

DOWNLOAD SETPOINT 1 / SETPOINT 2

0.1 sec

ACK or NAK

q

71

UPLOAD SETPOINT 1 / SETPOINT 2

0.1 sec

SETPOINT 1/ SETPOINT 2

R

52

RESET SLAVE

16 sec

NONE

S

53

DOWNLOAD SETUP : SETUP 1 / SETUP
2

0.1 sec

ACK or NAK

s

73 UPLOAD

SETUP1

0.1sec

Setup1

T

54 TARE

0.1

sec

NONE

W

57

WRITE TO EEPROM

16 sec

NONE

Z

5A ZERO

3

sec

NONE