Flintec FT-11D User Manual

Page 43

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FT-11(D) Technical Manual, Rev. 1.35 November 2010

Page 43 of 52

Write

command

Modbus

register

Function

code

Register

address

No. of

registers

Data

byte

count

Data bytes

Definition

00,01 Zero
00,02 Tare
00,03 Clear
00,04 Print
00,05 Reserved

00,06

Use setpoints from buffer
(40 012, 40 014, 40 016)

Control 40

009 10 00,08

00,01

02

00,07

Load actual setpoint from
indicator to buffer
(40 012, 40 014, 40 016)

40

010

Reserved

Setpoint 1

40 012

10

00,0B

00,02

04

Setpoint 1 buffer memory

Setpoint 2

40 014

10

00,0D

00,02

04

Setpoint 2 buffer memory

Setpoint 3

40 016

10

00,0F

00,02

04

Designated

value [hex]

Setpoint 3 buffer memory

0

None

188

Zero calibration

40 030

10

00,01

02

220

Span calibration (first
define the calibration
weight value in 40031)

Calibration

40 031

10

00,02

04

Calibration weight value


Modbus exception codes

1 : Function code is not supported
2 : Address is out of range (start and end)
3 : Invalid value feed or wrong byte number
4 : Operation error


Explanation (Setpoint):
The reading and writing of the setpoints is done in two steps.

Read operation (Setpoints):
1. Step : Load the actual setpoint values to the buffer.
Sending the control command 0007 to address [0008] (40 009) stores the actual setpoint values in the buffer
address [000B], [000D] and [000F] (Register 40 012, 40 014, 40 016).
2. Step : Read the buffer memory. Reading address [000B], [000D], [000F] (Register 40 012, 40 014, 40 016)
replies the actual corresponding setpoint value.

Write Operation:
1. Step : Load the value to the assigned buffer memory. Sending the designated value to address [000B],
[000D] or [000F] (Register 40 012, 40 014 or 40 016) loads the value into the selected buffer memory.

2. Step : Apply the values from the buffer memory. Sending the control command 0006 (setpoints) to address
0008 (Register 40 009) activates the value(s) from the buffer memory.

Attention:

Step 2 activates all 3 setpoint buffer values  All 3 setpoint values have to be loaded to their buffer

memory (step 1) before they can be applied (Step 2).

Terminal [hex] - Examples:
Performing direct read and write operations (Modbus High-Low) with the instrument address set to “01”. Empty
spaces in the example commands are only for a good pattern recognition; Use the commands without spaces.

Reading weight data

: 01, 03, 00,00, 00,02, C4,0B

Reading status data

: 01, 03, 00,02, 00,01, 25,CA

Reading tare data

: 01, 03, 00,03, 00,02, 34,0B

Activating tare

: 01, 10, 00,08, 00,01, 02, 00,02, 26,D9


Reading setpoint 1
1.step (load active setpoint 1 to buffer memory) : 01, 10, 00,08, 00,01, 02, 00,07, E6,DA
2.step (read the buffer memory)

: 01, 03, 00,0B, 00,02, B5,C9


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