This module is designed for interface adjustment between the devices which have the RS232 interface and the Smart Home system.


DWG file

Module dimensions

Example of connection

Module parameters

Parameter name Value
RS232 ports qty 1
Power supply 11.5 … 27.5 V DC from CAN
Max current(24V) 40mA
Data transfer speed 1200-115200 b/s
Bus type CAN (4-wire)
Equipment installation type DIN-rail (EN 60715)
Case material ABS
Protection IP40
Temperature range -10 … +50 °C
Size 2U, 36x97x58 mm
Weight 130g

Indication of module operation.

Indicator Status Description
Power Power
Power not available
Activity Transferring data
No data transferring
Error No errors


The device blinks once every two seconds. The data has not been transferred via the CAN bus for at least 5 minutes.

Module installation and connection procedure

  1. Install the module in the switchboard on the DIN rail and fix it with the special latch on the module base.
  2. Connect the X1 connector.
  3. Connect the CAN connectors.
  4. Configure the module using LT setup.
  5. Check all equipment for proper operation.

Module shut-off and deinstallation procedure

  1. Disconnect the connectors CAN.
  2. Disconnect the X1 connector.
  3. Remove the module from the DIN rail, releasing the latch at the bottom of the module base.

HW Settings

Name Type, range SUBID Default Description
cfg string 98 9600/8N1 cfg=’SPEED/BPS’, where
SPEED – baud rate [1200..115200];
B – data length [7,8];
P – presence and type of parity bit [N(No parity),E(Even parity),O(Odd parity)];
S – stop bit length [1, 1.5 or 2].

[Protocol] string 98 Protocol setting is described by protocol parameter. The following
protocols are supported”

  • ‘modbus’, Modbus protocol, at the end of redirection the checksum CRC16(Modbus) is added;
  • ‘dmx’, DMX protocol;
  • ‘CO2’ for connecting Larnitech CO2 sensors;
  • ‘salda’ for connecting Salda ventilation.


hw="cfg='9600/8N1' modbus"
echo on; off 98 'off' For settings check out and testing echo parameter can be used. Module
echo-reply can be turned on or off with the help of this parameter.

Echo parameter value:

  • ‘off’;
  • ‘on’.


hw="cfg='9600/8N1' echo='off'"