Despatch Protocol 3 Modbus Communications Bedienungsanleitung PDF herunterladen (Seite 51)

Modbus Programming Manual ADDRESS LIST

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2.9.5.13. Read Profile Memory Status (Command Code PS)

This command returns the status of the profile memory used. The response to this command is to

return a table of all the profile numbers that are in use. A value of 0x00 indicates that the profile

position is free and value of 0x01 indicates that the position is used by a profile. Using this

command in conjunction with the read profile name command will give a directory of profile

numbers to profile names.

Read Profile Memory Status - Request (to instrument)

Field Name

Data

Comments

(Dec)

(Hex)

Unit Address

A/R

The ID address of the instrument

Function Code

Requires the multi read/write function

Read Start Address High Byte

Read Start Address Low Byte

Read Quantity Of Registers High Byte

Read Quantity Of Registers Low Byte

Write Start Address High Byte

Write Start Address Low Byte

Write Quantity Of Registers High Byte

Write Quantity Of Registers Low Byte

Byte Count

Command Code High Byte

Command Code Low Byte

CRC High Byte

A/R

CRC Low Byte

A/R

The instrument replies to the Read Profile Memory Status request as follows:

Read Profile Memory Status - Response (from instrument)

Field Name

Data

Comments

(Dec)

(Hex)

Unit Address

A/R

The ID address of the instrument

Function Code

The multi read/write function

Byte Count

Profile 1 Position

0 or 1

For each of the 64 possible profile positions,

a value of 0 is returned if the position is free,

or 1 if the position is empty.

Profile 2 Position

0 or 1

etc…..

Profile 63 Position

0 or 1

Profile 64 Position

0 or 1

CRC High Byte

A/R

CRC Low Byte

A/R

1 2 ... 46 47 48 49 50 51 52

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