Despatch Protocol 3 Modbus Communications Manual do Utilizador descarregar pdf (Página 40)

ADDRESS LIST Modbus Programming Manual

40 Version 2

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Creating Or Editing A Profile Header at a specific location - Request (to instrument)

Field Name

Data

Comments

(Dec)

(Hex)

Profile Starting Setpoint Low

Profile Recovery High Byte

0 = Control to off, 1 = Restart profile,

2 = Maintain last profile setpoint,

4 = Continue profile from where it was when

power failed

Profile Recovery Low Byte

A/R

Profile Recovery Time (Byte 4 - high)

Floating point number

Profile Recovery Time (Byte 3)

Profile Recovery Time (Byte 2)

Profile Recovery Time (Byte 1 - Low)

Profile Abort action High Byte

0 = Control to off

1 = Maintain last profile setpoint

Profile Abort Action Low Byte

A/R

Profile Cycles High Byte

A/R

1 to 9999 or 10,000 for “Infinite”

Profile Cycles 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.

2.9.5.3. Creating a Segment (Command Code WS)

Creating new segments is only possible when a new profile is being created (see above for

instruction for creating a profile at the next available position, or at a position that you specify).

An error is returned if the correct sequence is not followed.

Creating Segments - 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

Create Segment (WS) = 11dec / 0x0Bhex

Byte Count

Create Segment (WS) = 22dec / 0x16hex

Command Code High Byte

Create Segment (WS) = 22355dec /

0x5753hex

Command Code Low Byte

Profile Number High Byte

A/R

The profile number can be anything between

0 and 64

Profile Number Low Byte

A/R

Segment Type High Byte

0 = Ramp Time, 1 = Ramp Rate,

2 = Step, 3 = Dwell, 4 = Hold, 5 = Loop

6 = Join, 7 = End, 8 = Repeat sequence

then end

Segment Type Low Byte

A/R

Segment Info A (Byte 4 - High)

Floating point number

The meaning of the data contained in

Segment Info A depends on the type of

segment it relates to. See section 12.5.5.

Segment Info A (Byte 3)

Segment Info A (Byte 2)

1 2 ... 35 36 37 38 39 40 41 42 43 44 45 ... 51 52

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