Endress+Hauser EngyVolt RV12, Руководство по эксплуатации

Страница: 55 / 64

EngyVolt RV12 Appendix
55
11.5 RS485 Implementation of Johnson Controls Metasys
These notes briefly explain Metasys and EngyVolt device integration. Use these notes with
the Metasys Technical Manual, which provides information on installing and
commissioning Metasys N2 Vendor devices.
11.5.1 Application details
The EngyVolt multifunctional electrical energy meter is an N2 Vendor device that connects
directly with the Metasys N2 Bus. This implementation assigns key electrical parameters
to ADF points, each with override capability.
Components requirements:
• EngyVolt device with RS485 card and N2 port available.
• N2 bus cable
Metasys release requirements
• Metasys Software Release 12.04 or later
• NCM-361-8 or Metasys Extended Architecture NAE35,NAE45,NAE55
EngyVolt devices may be compatible with earlier releases of N2 software, but Johnson
Controls only supports integration issues on the above.
Support for Metasys integration
Please contact the nearest Jonson Controls Energy Efficency or Johnson Controls System &
Services representative. The address can be found on the Johnson Controls website.
Design considerations
When integrating the EngyVolt device equipment into a Metasys Network, keep the
following considerations in mind.
Make sure all EngyVolt device equipment is set up, started and running properly before
attempting to integrate with the Metasys Network.
A maximum of 32 devices can be connected to any one NCM N2 Bus segment, or up to
100 devices if repeaters are used.
From the instrument set-up screen, the Coms option must be set to N2, then the address
set to the required value. All port settings will then be set automatically, see below.
Device address 1 to 255
Port set up:
Baud rate
1)
9600
Duplex Half
Word length 8
Stop bits
1)
1
Parity
1)
no
Interface RS485
1) The user has to make sure that the values given are set up in the EngyVolt device in order to ensure
compatibility with the N2 protocol network.