Form 3 message – West Control Solutions N8080 (for 1xxx) User Manual

Page 13

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3.3.3 Form 3 Message

This message implements the Parameter Write operation either on a single

addressed instrument (address in the range 1 - 99) or broadcast to all instruments

connected to the master device (i.e. using address 00). Note that, with the

broadcast message, each slave instrument does not generate a reply. The

message from the master device is of the form:

Laapnnnnn*

where

aa is the address (a two-digit hexadecimal number)

p is a single-character parameter identifier (see Table 3-1)

nnnnn is the value to be written (a five-digit hexadecimal

number)

The reply for a successful Parameter Write operation is of the form:

LaapnnnnnA*

where

aa is the same address as in the received message

p is a single-character parameter identifier (see Table 3-1)

nnnnn is the value written (a five-digit hexadecimal number). In

cases in which this parameter does not exist or is not

applicable for the slave instrument, this value is 00000.

Iif a valid parameter is specified with an invalid value or an error condition is

encountered, the reply is of the form:

LaapnnnnnN*

where

aa is the same address as in the received message

p is a single-character parameter identifier (see Table 3-1)

nnnnn indicates the error condition:

OM090-3

Volume I

3-3

59135

Value

Error Condition

FFFFF

Value under-range

7FFFF

Value over-range

7FFFE

Sensor Break detected

00001

Read Only parameter

00000

Illegal value

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