Extension for a Modbus TCP connection

The heat pump manager can be used as an accessory NWPM extension be integrated into an Ethernet network. With the NWPM extension it is possible to access the heat pump manager with the Modbus TCP protocol.

The following description always refers to the latest firmware. This can differ from previous versions.

• 1 System requirement
• 2 Function codes supported
• 3 installation
  • 3.1 Heat pump manager settings
  • 3.2 Determine the IP address
    • 3.2.1 Hostname
    • 3.2.2 Netscan
• 4 Data point list
  • 4.1 Operating data
  • 4.2 history
    • 4.2.1 Example of heat quantities*
  • 4.3 settings
    • 4.3.1 1st heating circuit
    • 4.3.2 2nd / 3rd heating circuit
    • 4.3.3 mode
    • 4.3.4 Hot water
    • 4.3.5 swimming pool
    • 4.3.6 2. Heat generator
  • 4.4 Selection of time functions
    • 4.4.1 Lowering / raising
    • 4.4.2 Hot water lock
    • 4.4.3 Thermal disinfection
    • 4.4.4 DHW circulation pump
  • 4.5 Display ads
    • 4.5.1 Status reports
    • 4.5.2 Lock
    • 4.5.3 Fault messages
    • 4.5.4 Sensors
  • 4.6 Entrances
  • 4.7 Outputs
  • 4.8 Time alignment
• 5 Function descriptions
  • 5.1 Room temperature control Smart-RTC +
    • 5.1.1 Necessary settings on the heat pump manager
    • 5.1.2 Room control data points
    • 5.1.3 Example for writing the room values
      • 5.1.3.1 Module 1 - Switching the room addresses
      • 5.1.3.2 Module 2 - Delayed writing of the room values
      • 5.1.3.3 Module 3 - Compare the room address to be written
      • 5.1.3.4 Module 4 - Writing the room values to the buffer
      • 5.1.3.5 Module 5 - Writing the room values to the heat pump manager
      • 5.1.3.6 summary
  • 5.2 Smart-Grid / SG Ready
    • 5.2.1 Operating states
    • 5.2.2 Implementation on the heat pump manager
• 6 Contact
  • 6.1

NWPM extension for ModbusTCP Open
Order reference	NWPM
item number	356960
Operating conditions	0 to 55 ° C 20/80% RH
Ethernet interface	RJ45 10BaseT Cat5 max. 100m
protocol	Modbus TCP
Modbus TCP port	502
Slave ID	1
Storage	16 MB RAM 8 MB flash 3 MB for user pages
CPU	ARM7 TDMI @ 74MHz clock
operating system	Linux 2.4.21
Usable	from WPM 2004 from software H_H50
Delivery status with
Firmware	A1.5.0
user interface	v12

The minimum system requirement for using the NWPM extension is a Dimplex heat pump with heat pump manager WPM 2004, WPM 2006, WPM 2007 or WPM EconPlus series with software version H_H50 and higher.

Furthermore, a PC with network connection, a router and an S / FTP cable of category 5e or higher is required to connect the NWPM extension necessary. A browser such as Mozilla Firefox must be installed on the PC to display the user-specific interface.

The installation of the NWPM extension takes place on the heat pump manager in the designated slot “Serial Card / BMS Card”. The following steps are carried out:

• De-energize the heat pump manager

Open

• Remove the cover of the “Serial Card / BMS Card” slot with a small screwdriver

Open

• Installation of the NWPM extension

Open

• Close the opening with the enclosed cover

• Supply the heat pump manager with voltage

Depending on the software version of the heat pump manager, the following settings must be checked and, if necessary, adjusted:

Access to the user interface of the NWPM extension takes place via the dynamically assigned IP address of the router. This IP address can be found in the router's user interface using the respective MAC address of the NWPM extension can be read out. To do this, the administration of the router must be accessed.

From the heat pump manager software version L12 and firmware version A1.5.0 of the NWPM extension (delivery status from May 2013), the IP address assigned by the router can be read in the menu. This menu is accessed by pressing the key combination at the same time (approx. 5 seconds) «ESC» and «Enter». By pressing the «buttonmenu»You get back to the standard display.

• Use the arrow keys to select "OTHER INFORMATION" and use «Enter» confirm

Open

• Select "PCOWEB / NET CONFIG" with the arrow keys and press «Enter» confirm

Open

• Select "PCOWEB settings" with the arrow keys and press «Enter» confirm

Open

• If the NWPM extension is connected to a router where the DHCP function is active, the assigned IP address is displayed

• If the NWPM extension is not connected to a router, a fixed IP address can be assigned

• The selection of DHCP must be set from ON to OFF and the desired IP address set

Open

• The netmask and gateway

Open

• or DNS1 and DNS2 can be read or assigned

Open

• If changes have been made, they must finally be confirmed with YES and a restart carried out

Open

After successfully assigning a dynamic IP address to the router and supporting this function, there is the option of access via a host name. This is made up of the term "pcowebXXXXXX" and the last 6 digits of the MAC address.

Example: http: // pcoweb10601f /

First of all, the current version "Netscan" for the existing operating system must be searched for on the Internet and saved on the hard drive. If necessary, the folder content is then extracted and the "netscan.exe" file is executed.

• IP address range selection of the network via the "IP" icon

Open

• Mark the address range of the network

Open

• Scanning the IP addresses "Start Scanning" and reading out the IP address based on the MAC address

Open