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Flintec DAS 72.1 User Manual

Page 43

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GO

Get Peak to Peak value

Master ( PC / PLC ) sends

DAS 72.1 responds

Result

GO

¿

O+01.000

Peak to Peak value 1 000 d

GV

Get Valley value

Master ( PC / PLC ) sends

DAS 72.1 responds

Result

GV

¿

V+01.000

Valley value 1 000 d

GW

Get the “long” weight values (in a data string)

Command for output of the current net weight, gross weight, scale status and checksum values. No decimal
point is available in this data string.

Master ( PC / PLC ) sends

DAS 72.1 responds

Result

GW

¿

W+00100+01100010F

Explanation (see below)

The response is in the format W+00100+01100010F. The first two sections of the return string comprise the
net weight and gross weight results, followed by two hexadecimal characters, which represent two
bitmapped status indicators. The last two hexadecimal characters represent the checksum, which is the
inverse of the sum of all the ASCII values of the string, not including the checksum characters.

W

+00100

+01100

0

1

0F

leading character

signifies the GW

response

net weight

excluding decimal

point

gross weight

excluding decimal

point

first

bitmapped binary

value

second bitmapped

binary value

checksum

Status bit:

first bit
value

description

second bit
value

description

1

not used

1

no motion

2

output 1 active

2

zero action performed

4

output 2 active

4

tare active

8

output 3 active

8

not used

The checksum is derived as follows :

a. Add the ASCII values (in hex) of all the 15 characters in the string
b. Invert the hexadecimal value
c. Add one to the value
d. Use only the last two digits
e. Convert the hexadecimal value to characters

Manual DAS 72.1

Page 43