Hardy ANY-WEIGH Bench Scales Manuel d'utilisateur télécharger pdf (Page 27)

Chapter 5 - Setup

5-5

Most of the DeviceNet Scales’ parameters are only 1

byte long, making it possible to write them with a sin

gle command. There are also some 4 byte parameters.

To write one of them:

Step 1. First write the 2 most significant bytes,

using a WRITE command as described

above, with 0x27 in the parameter number

field.

Step 2. Write the least significant bytes using nor-

mal parameter numbers. The module will

combine the value written to parameter

0x27 with the least significant bytes to

produce the value written to the 4 byte

parameter.

The 4 bytes written to the output table are as follows:

• If the Command byte of the input data is 0

(READ), the data is the value of the specified

parameter, least significant byte first.

• If the specified parameter is an invalid number (0

for example: there is no parameter number 0), the

data is net weight, with units as determined by

the METRIC POLL parameter.

• If the Command byte of the input data is non-zero

(WRITE), the output data echoes the input data.

Examples

Using the

Command

Interface

Reading Gross Weight in the polled output data.

1. First word (2 least significant bytes) of the input

data is not used. Ignore.

2. Lower byte of second word is the parameter num-

ber. Gross weight in lbs is parameter #16.

3. Upper byte of second word set is “0” indicating

read.

This causes the unit to output the Gross weight in lbs

to the output polled data area. Resolution and data

type would depend on the Weight Multiplier setting.

Writing new value to number of averages.

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Hardy ANY-WEIGH Bench Scales Manuel d'utilisateur Page 27