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Modbus communications – CIRCUTOR CVM-B Series User Manual

Page 293

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Maximum value: 250.

Minimum value:

1

.

Use the

and

buttons to select the different options.

To confirm the selection, press the

button.

If no button is pressed for 5 minutes, the display screen changes automatically to the default

screen, which displays the voltage measurement of 4 parameters.

● When programming the

transmission speed, Baud rate:

,

...

Possible transmission speeds

:1200, 2400, 4800 o 9600�

Previous, selects the previous parameter

Next, selects the next parameter

Confirm, confirms and saves the values programmed on the screen in the

memory

Back, returns to the main configuration screen of the expansion modules menu.

Main Menu, returns to the main menu,

figure 25

.

Use the

and

buttons to select the different options.

To confirm the selection, press the

button.

If no button is pressed for 5 minutes, the display screen changes automatically to the default

screen, which displays the voltage measurement of 4 parameters.

7�8�4�- MODBUS COMMUNICATIONS

The following functions are implemented for this variable:

function 0x04: reading logs.

function 0x10: Writing multiple logs.

Table 152:Modbus memory map: MBus communications module

Configuration of the MBus parameters

Configuration variable

Address

Valid data margin

Default value

Primary address

EE48

1 - 250

1

Baud rate

EE49

2: 1200 - 3: 2400 -

4: 4800 - 5: 9600

5

Note: The 2 logs can be read separately, but they must be written at the same time (as a

group). Otherwise, the system will reply with an error.

293

Instruction Manual

CVM-B100 - CVM-B150