Despatch Protocol 3 Modbus Communications Manuel d'utilisateur télécharger pdf (Page 44)

ADDRESS LIST Modbus Programming Manual

44 Version 2

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2.9.5.7. Deleting a Segment (Command Code DS)

The delete segment command deletes the specified segment from the specified profile. The

following segments are moved up one place in the profile (e.g. if segment 6 is deleted segment 7

now becomes segment 6).

Delete A Segment - 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

Read Quantity Of Registers Low

Write Start Address High

Write Start Address Low

Write Quantity Of Registers High

Write Quantity Of Registers Low

Byte Count

Command Code High Byte

Command Code Low Byte

Profile Number High Byte

A/R

Number of the profile that the segment

wants to be deleted from

Profile Number Low Byte

A/R

Segment Number High Byte

A/R

Number of the segment that wants to be

deleted

Segment Number Low Byte

A/R

CRC High Byte

A/R

CRC Low Byte

A/R

The instrument replies to this message with an Edit Response Message Section 2.9.5.9.

2.9.5.8. Getting the Number of Segments Remaining (Command Code SR)

Returns the number of unused segments remaining in the instrument. The number will be

between 0 and 255, depending on how many have been used in the profiles so far created.

Get Segments Remaining - Request (to instrument)