Data Sheet for Product

Siemens

A6V12513940_en

Smart Infrastructure

2021

Commissioning

The devices were developed specifically for use with Climatix pushbutton configuration as

described in document CE1A3975

The bus configuration can alternatively be configured by the local HMI, see section User in-

terface [▶ 5].

Check the following during commissioning:

● Bus configuration (address, baudrate, transmission mode, and optional bus termination).

The default address 255 allows mounting and commissioning of multiple actuators at the

same time without interfering with each other.

● Actuator parameters (Opening direction, position limits, position adaptation, etc.). The

value can be read over the Modbus register.

Documents can be downloaded at http://siemens.com/bt/download.

Full or partial configuration via bus

The devices can be configured over bus if the pre-commissioning settings allow for a con-

nection between the Modbus master / programming tool and peripheral devices (i.e. non-

conflicting addresses and matching baudrate / transmission format).

● Full configuration via bus: A unique Modbus address can connect by the Modbus mas-

ter/programming tool after startup using the presets for transmission format and baud

rate (or auto-baud).

● Partial configuration over the bus: A Modbus address that is not unique must be first set

to a unique address, either by using the address input with pushbutton (see Enter ad-

dress using pushbutton [▶ 7]) or by setting the address to 246 by pressing the pushbut-

ton > 5s and < 10s (see Pushbutton operation [▶ 5]). The Modbus master/programming

tool can then connect after startup using the the presets for transmission format and

baud rate (or auto-baud).

The bus and actuator parameters can be set to target values on an existing connection over

the bus. For write operations to the bus parameters, "1 = Load" must be written to Reg 768

within 30 seconds; the changes are otherwise discarded.

Example: The table shows the register values before and after the change via bus access.

764 Modbus address 246 12

765 Baud rate 0 = Auto 1 = 9600

766 Transmission format 0 = 1-8-E-1 3 = 1-8-N-2

767 Bus termination 0 = Off 0 = Off

768 Bus conf. command 0 = Ready 1 = Load