Metasys N2, Technical Manual

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N2 Dialer Module—N2 Dialer Module (NDM) 55
Appendix C: Using Metasys
CS Objects with an NDM
This appendix includes:
•
Introduction
•
Design Considerations
•
NDM - Hardware Definition
•
Overview of Local NDM Points
•
Mapping Local NDM Points to the Multistate Attributes of a
CS Object
•
Remote NDM-- Software Point Mapping
•
Reporting Binary Changes of State (COS)
•
Reporting Analog Alarm Conditions
•
HVAC PRO for Windows Point Definition for Alarm Reporting
•
Downloading
•
Scheduling
•
Troubleshooting
•
Point Mapping Table
The purpose of this appendix is to explain using CS objects to control local and remote
NDM communication. The more typical method of control--using NDM windows at the
Operator Workstation--is explained in the Operator Workstation User’s Manual, under
Using Dial-Up with the NDM.
The N2 Dialer Module (NDM) provides a link between an NCM and a remote N2 Bus for
point monitoring and change of state reporting. By using the NDM, a second NCM may
not be required at the remote site.
“Local” and “remote” are the terms used when referring to the two configurations of
NDMs. The local NDM resides on an N2 Bus that is connected to a Metasys NCM on the
N1 LAN. The remote NDM resides at an offsite location and has controllers (e.g., AHU,
DX-9100) connected to it via the N2 Bus. This remote location does not have a
supervisory system directly connected to it.
The minimum requirements for an NDM application are two NDMs (one remote and one
local), a dedicated phone line, two 9600 baud Hayes Optima or 100% compatible
modems, and supported remote N2 devices.
●
Configuring the NDM requires HVAC PRO for Windows 5.10 or later.
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When programming a remote NDM using HVAC PRO for Windows, it is
imperative that you properly program the N2 addresses for all devices connected to
the remote NDM. This is done by loading the remote NDM configuration, selecting
Phone Number Configuration from the Action menu, and filling in the Remote N2
Addresses field. This field must correctly list all N2 addresses for devices
connected to the remote NDM. It must not contain the address of the remote NDM
itself.
●
The local NDM can contain up to 50 remote site names and phone numbers.
●
The remote NDM can contain up to four site names and phone numbers that it will
attempt to dial in the case of a COS or alarm condition. From this prioritized list of
four sites, it will connect only to the first successful dial.
●
The NDM site names must exactly match (case insensitive).
Introduction
Design
Considerations