Description of the Module and Installation - TeSys Ultra LULC033 Modbus Module User Guide

Diagram of the Module

Connectors and indicator lights (LEDs) on the LULC033 Modbus communication module:

1

Green COMM Modbus communication status LED.

2

Red ERR Modbus communication module fault indication LED.

3

Green 24V LED indicating voltage presence at outputs OA1, OA3, LO1.

4

RJ45 connector for the Modbus RS-485 link.

5

Connection of the module power supply.

6

Connection of the 24 V power supply for outputs OA1, OA3, LO1.

7

Discrete input 2.

8

Discrete input 1.

9

Discrete output 1, assignable depending on the configuration register (685 LSB).

10

24 V prewired coil connector for the power base.

The assignment of OA1 depends on the configuration register (686 LSB).
The assignment of OA3 depends on the configuration register (686 MSB).

11

Connector for communication with the advanced control unit.

Description of Indicator Lights (LEDs)

Description of the various states of the indicator lights (light-emitting diodes, LEDs) on the LULC033 Modbus communication module.

Light-emitting diodes (LEDs)			Meaning
Green COMM LED	Red ERR LED	Green 24V LED	Meaning
Flashing (alternately with the ERR LED)	Flashing (alternately with the COMM LED)	On	Bus parameter initialization in progress
Flashing during communication with the Module address	Off	On	Normal operation
Off	Off	Off	Faulty: 24 Vdc voltage missing on the 24 Vdc terminal. Check the connection between the power supply and the communication module.
	On	On	Internal fault on the LULC033 Internal Faults
	Flashing	On	Loss of communication on the Modbus network

NOTE: During startup, because the default fallback mode is forced stop, if no communication has previously been established, the red ERR LED will flash after one minute (default timeout value).

Addressing Using Switches

The Modbus communication module address is defined by switches located on the underside of the module. Turn the module over to access them:

The module is delivered with the default address 1
Example of configuration with address 20

The range of accepted values is between 1 and 31.

The address coding is in binary format.

The least significant bit is on the right, indicated by .

Address 0 is not taken into account by the module, since it is used by the Client for a broadcast request.

NOTE: Addressing is only taken into account when the communication module is powered up.

Order of Mounting on a Base

The LULC033 module is installed in a power base or a controller base (on the underside of the control unit which locks it in position).

To install the module in the power base or controller base:

Step	Action
1	Choose the prewired coil connection terminals.
2	Insert the LULC033 Modbus communication module.
3	Insert the control unit which locks the module.

The diagram below illustrates these steps. Installation of the LULC033 Modbus communication module corresponds to step (2). The numbers indicate both the order of mounting for the components and their location.