Trebor Quantum Series Di Water Heater - Manual (Page 28)

PAGE 28 QUANTUM DI HEATER OPERATION / MAINTENANCE MANUAL
Figure 4-11: Invalid Pin
If the user PIN number is lost: Contact Trebor for instructions to reset
the security features.
4.3 REMOTE OPERATION OVER A NETWORK
4.3.a Ethernet Interface
The heater can be operated over an Ethernet network using either
Modbus TCP or a proprietary software interface. A remote connection
over Ethernet can turn the heater on and off, change the set point, and
check the operation and the alarm status. Contact the factory for further
information regarding the Ethernet software interface.
4.3.b Modbus Protocols
Quantum heaters can communicate on both Modbus/TCP and
Modbus/RTU networks. Modbus/TCP communication is included in all
Quantum heaters; Modbus/RTU communication is an option on all
Quantum heaters. Using Modbus communication, Quantum heaters can
be turned on and off remotely, the set point can be changed, and the
operation status and alarms status can be monitored.
The Modbus register mapping for Quantum heaters is the same for both
Modbus/TCP and Modbus/RTU protocols. The register mapping is for
single, dual, triple and quadruple output Quantum heaters.
Table 1: Version 1 Modbus Mapping shows the new register mapping that
uses only Modbus registers. Table 2: Version 2 Modbus Mapping shows
the old register mapping that uses both Modbus registers and coils.
While either mapping can be used, Trebor recommends that new
installations use the new mapping in Table 1: Version 1 Modbus
Mapping.