Operating Instructions

Chapter 3—Applications
Customized Applications
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79
Siemens Industry, Inc.
Owner's Manual
588-781
Building Technologies
2018-10-01
User Access and Privileges
A user issues commands or requests to the TC Modular Series using an operator
terminal and the operator interface program that resides in the TC Modular Series. The
operations that a particular user can perform depend on the access level assigned to
each field panel function in their user account.
User accounts are used to manage access and security for field panels on a specified
Automation Level Network (ALN). By creating individual accounts, a system
administrator can control each user’s access to objects and functions residing in field
panels on a specified ALN.
Specifically, a system administrator can perform the following tasks:
● Define the users that can access an ALN
● Assign access to access groups
● Assign privileges to field panel functions residing on an ALN
Controlling User Access to Field Panel Functions
The following four access levels can be assigned to any field panel function for any
user.
● No Access – Users cannot see the function.
● Read Only – Users can only view the value or status of objects.
● Command – Users can command or display the value or status of objects.
● Edit – Users can add, delete, command, modify, and view objects.
Example
If a user has a Command access level for the Point Editing function, then only the
functionality required to command a point is available to them. They do not see or have
access to the prompts required to add, modify, or delete a point definition.
For more information on user accounts and privileges, see the TALON Firmware
User's Manual (588-580) (588-580).
Customized Applications
Some TC Modular Series applications are created in the Powers Process Control
Language (PPCL). These applications use PPCL statements and additional hardware
to perform customized operations or functions in your system. Examples of
applications created in PPCL include:
● Duty Cycling
● Enthalpy and Dry Bulb Economizer Control
● Peak Demand Limiting (PDL)
Information on how to customize these applications for your facility is included in the
TALON Powers Process Control Language (PPCL) User's Manual (588-583) and the
TALON Firmware User's Manual (588-580). These manuals are available from your
Siemens Solution Partner, Authorized TALON Dealer.
SNMP
The Simple Network Management Protocol (SNMP) Agent is a firmware feature that
has been added to BACnet Firmware Revision 3.2.3 and later. The SNMP Agent
allows points in the field panel to communicate with an SNMP manager over Ethernet.