hager hw+ User Manual

142 6LE008146B
Communication functions
9.2 Modbus communication
Modbus-RTU or Modbus-TCP communication enables the following principal functions:
- Reading of status and measurement data,
- Transfer of event history,
- Display and modification of the protection and measurement settings,
- Reading of identification data of the circuit breaker.
- Access to remote controls available on the circuit breaker (opening or closing operation,
switching of the protection profiles, inhibition of advanced protections),
- Setting the clock and synchronising it.
For more information on the use of these communication modules, refer to the sentinel Energy
Modbus communication user manual.
The Modbus RTU communication module has two RJ45 sockets on the left side. They are
used to relay the serial link to other Modbus participants in accordance with the Daisy Chain
principle.
The MODBUS 1 and MODBUS 2 plugs can be used in an inlet/outlet direction as well as an
incoming/outgoing direction.
MODBUS RTU Value Description
ADDRESS 1 to 247 Modbus address setting
BAUD 4800; 9600; 19200; 38400 BAUD rate setting
PARITY
Odd 1 stop bit
Even 1 stop bit
no parity 2 stop bits
STOP BIT 1 or 2
Setting the parity includes automatically managing the
automatic adjustment of the number of Stop bits.
N.B.
If an installation includes several Modbus RTU communications modules, it is essential that
the last module is connected with a resistor of 120 Ω (reference item HTG467H) to integrate a
terminal resistor.
1
2
1
Power Communication module powered and functional
Permanent green
Synchronisation with the trip unit data
Flashing green
Internal fault
Flashing red
2
COM Modbus data transmission
Flashing green
Modbus transmission failure
Flashing red
3
RTU port Modbus 1
4
RTU port Modbus 2
3
4

hager hw+ Specifications

General

Brand	hager
Model	hw+
Category	Circuit breakers
Language	English