Vaisala HUMICAP MMT162 Guia do Utilizador descarregar pdf (Página 34)

User's Guide _______________________________________________________________________

32 ___________________________________________________________________ M210934EN-D

Checksums are calculated as described in the equations below.

∑

bcs

256mod

65536mod

∑

bcs

24630'

2463'

'''

===

≠≠=

⊕⊕⊕=

iiii

borbifb

bandbifbb

bbbcs 

Table 7 Symbols Used in FORM Checksum Equations

Symbol

Description

Value of CS2 checksum in the output message.

Value of CS4 checksum in the output message.

Value of CSX checksum in the output message.

Value of the byte at position i (1-based) in the output message.

Number of bytes in the output message before the CS2, CS4,

or CSX field (including earlier checksum fields, if any).

⊕

Bit-wise exclusive-or operator.

Byte value of ASCII $ character.

Byte value of ASCII * character.

Select Unit

Use the UNIT command to select metric or non-metric output units.

UNIT [x]<cr>

where

M or N

where

Metric units

Non-metric units

1 2 ... 29 30 31 32 33 34 35 36 37 38 39 ... 74 75

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