Define the communication settings for the External Device using the engineering software EcoStruxure Machine Expert – HVAC.
Start up the engineering software.
From the menu bar, click the [File] -> [New project].
Select M172 28-42 I/Os 596.11*1 in a pull-down
menu for Target selection, and then click [OK] with any project name.
*1 Numerical
value added with the tail of model name is representing F/W version.
It's could be different depending on your engineering tool version.
And "M172 28-42 I/Os" is replaced with the controller you
have as below.
Controller Name |
Target Name |
|---|---|
M172O / M172P |
M172 07-18 I/Os M172 28-42 I/Os |
M171P Flush |
M171P Flush Mounting |
M171P |
M171P Blind M171P Display |
Connect USB Cable (A to mini-B) between your PC and the target controller.
From the menu bar, click the [On-line] -> [Setup communication…].
Activate [Modbus], then click [Properties] for configuring communication setting for Modbus.
Select USB port.
Navigate to a Commissioning tab.
Click [Connects To The Target] button.
From a tree menu, expand [M172 28-42 I/Os] -> [BIOS parameters] -> [All parameters], select [RS485-1 On Board] folder.
Setting |
Folder |
|---|---|
RS485-2 port on M172 |
RS485-2 On Board |
RS485 port on M171 |
RS485 On Board |
RS485 port on serial link module |
RS485 Plugin Passive |
Configure parameters are listed below.
Name*1 |
Setting Value |
Notes |
|---|---|---|
Addr_RS485_OB1 |
1 |
Modbus Port Number |
Proto_RS485_OB1 |
3 |
3=Modbus/RTU |
DataBit_RS485_OB1 |
8 |
Data Bit |
StopBit_RS485_OB1 |
1 |
Stop Bit |
Parity_RS485_OB1 |
2 |
Parity Bit 0=None, 1=Odd, 2=Even |
Baud_RS485_OB1 |
2 |
Baud-Rate 0=9600 1=19200 2=38400 3=57600 4=76800 5=115200 |
*1 Parameter Names are depending on selecting folder.
RS485-1 On Board |
RS485-2 On Board |
RS485 On Board |
RS485 Plugin Passive |
|---|---|---|---|
Addr_RS485_OB1 |
Addr_RS485_OB |
Addr_RS485_OB |
Addr_RS485_OB |
Proto_RS485_OB1 |
Proto_RS485_OB |
Proto_RS485_OB |
Proto_RS485_OB |
DataBit_RS485_OB1 |
DataBit_RS485_OB |
DataBit_RS485_OB |
DataBit_RS485_OB |
StopBit_RS485_OB1 |
StopBit_RS485_OB |
StopBit_RS485_OB |
StopBit_RS485_OB |
Parity_RS485_OB1 |
Parity_RS485_OB |
Parity_RS485_OB |
Parity_RS485_OB |
Baud_RS485_OB1 |
Baud_RS485_OB |
Baud_RS485_OB |
Baud_RS485_OB |
From the menu bar, click [Parameter] -> [Write all].
Reset the controller by power off/on.
To use the HVAC controller, select the [Use HVAC Controller] check box under [Equipment Settings] in the driver’s properties.
When using a string variable, select ["BADC" from top address] from [String Mode] in the driver's properties. The character code that can be used is ASCII only.
When “Use HVAC Controller” is checked, the
following properties become disabled.
- Addressing mode
- IEC61131 Syntax
- Mode
- Communication Optimization
- Preferred Frame Length
- Length
This driver uses variables exported from the EcoStruxure Machine Expert - HVAC. Import the exported variables by clicking [Import] from the toolbar on the variable editor of BLUE.