In addition to the standard enumeration sets (which define the text displayed for each state of a Binary and Multistate object) provided with the Metasys system, Auto-Created States Text can be automatically added when a non-Johnson Controls device or select Johnson Controls-labeled BACnet device is discovered and added to a supervisory controller. An Auto-Created States Text can be automatically assigned to the States Text field of a mapped object.
The BACnet State_Text property is read when an online supervisory controller discovers BACnet objects (BI, BO, BV, MSI, MSO, and MSV), and when a user views the object. When the value of the integrated point's States Text attribute is updated and the user-selected states attribute is false, the Metasys system checks to see if the BACnet State_Text property associated with the object matches a standard enumeration set used with Metasys States Text. Existing Auto-Created States Text are also checked.
If a match occurs, the Metasys system automatically assigns the matching States Text value to the object. If no match occurs, the Metasys system automatically creates and assigns a new enumeration set. All new sets added at each supervisory controller are copied to the Site Director. New States Text added have the following limitations:
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1,000 new enumeration sets maximum
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260 Kb memory for all sets
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For any multi-value BACnet object (MSI, MSO, MSV), the number of states can be between 2 and 500, with a maximum of 60 characters for any one state. Using the Command window, you can only manually select from the first 32 states.
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Auto-Created States Text can only be automatically assigned to one object and cannot be edited using the Metasy system.
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Auto-Created States Text is saved in the Site Director, and cached in the other devices.
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The Rediscover Text Strings device level command allows you to reset the States Text across an entire Metasys supervisory device; It rediscovers text strings from all the mapped BACnet objects.
|
Metasys Product |
Uses Auto-Created Enumeration Sets |
Makes Changes to Auto-Created Enumeration Sets |
|---|---|---|
|
Metasys Advanced Reporting System with Energy Essentials |
Yes |
Yes |
|
ADS/ADX/ODS/OAS |
Yes |
Yes |
|
NAE, NCE, SNE, SNC |
Yes |
Yes |
|
SCT, SCT Simulation |
Yes |
No |
|
CCT |
No |
No |
Auto-Created Enumeration Sets are not translatable and do not appear in the dictionary viewer tool. They are local to the site where they are defined.
For Binary Values and Multistate Variables, Auto-Created States Text is indicated by an asterisk at the beginning of the States Text value, as shown in Figure 1.
After a multi-value BACnet object from a third-party device is mapped to Metasys, in a rare instance the SMP UI might display its enumeration set ID with the current value of the object (for example, 1031:10 (text not found) Normal). The first number in this example (1031) is the enumeration set ID and the second number is the enumeration value counting from 0. If you see the current value of the object represented in this manner, either the UserDictionary on the site is out of sync or the number of states property at the third party device has changed. To resolve, perform a Rediscover Text Strings command at the network engine to which the third-party device reports. This action flushes the locally saved auto-discovered text and updates all objects with the current text.