ABB SACE Tmax XT2 - Page 132

1SDH002031A1002 ECN000092998 Rev. B SACE Tmax XT2 – XT4 | 132
Interface
The module has three signalling LEDs:
Figure 31
LED
Description
Power
Reports ON status and correct communication with Ekip Touch:
 off: module off
 fixed or flashing light synchronized on power LED of Ekip Touch: module ON
and communication with Ekip Touch present
 flashing not synchronized with power LED of Ekip Touch (two fast flashes
per second): module ON and communication with Ekip Touch absent
Rx
Indicates the status of the communication between the network master and the
module (slave):
 off: Modbus RTU communication not active
 on with fast flashing: Modbus RTU communication active
Tx
Indicates the status of the communication between the network master and the
module (slave):
 off: communication between Modbus RTU not active
 on with fast flashing: Modbus RTU communication active
Configurations
Resistances can be linked to bus RS-485, configuring dip switches located on the side of the
module:
Figure 32
Resistances
Dip switch
Description
Default
Rterm
1 and 2
Termination resistance 120 
Move dip switches 1 and 2 to ON position to
connect Rterm
Off
Rpol
3 and 4
200 pull-up or pull-down resistance 
Move dip switches 3 and 4 to ON position to
connect Rpol
Off
IMPORTANT: move the dip-switches before connecting to Ekip Supply module
and to the communication network