Manual

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Valve Manager T8031
Issue 2 Oct 05 PD-T8031 11
2. System Requirements
The Valve Manager requires that certain aspects of the systems that it works with to be configured in a
c
onsistent manner. In all such cases, the configuration is limited to the aspects that directly involve
valve testing.
2.1. Required Tags and Tag Naming Convention
In order to be able to automatically recognize and work with a valve, the Valve Manager requires that
certain variables associated with each valve follow a specified naming convention. The tags for such
variables consist of 2 parts: a valve identifier, followed by a suffix specific to the type of variable (i.e.
“valve01_VTS”, where “valve01” is the identifier and “_VTS” is the suffix). The valve identifier must be
the same for all tags related to a given valve. Additionally, certain tags require that a valid Modbus
address be defined.
The following table enumerates the required variables, their appropriate suffix, and the required
Modbus access.
Type Attribute Suffix Modbus Access Description
Boolean Internal _VTS Read/Write Valve Test Start
Integer Internal _ETM Read/Write End Time
Integer Internal _EST Read/Write End State
Integer Internal _VTM Read Only Valve Test Mode
Integer Internal _VT1 Read Only Valve Test Transition Time 1
Integer Internal _VT2 Read Only Valve Test Transition Time 2
Integer Internal _VT3 Read Only Valve Test Transition Time 3
Integer Internal _VT4 Read Only Valve Test Transition Time 4
Integer Internal _VT5 Read Only Valve Test Transition Time 5
Boolean Internal _VTP Not Required Valve Test Permissive
Integer Input _MXI Not Required Selected Mux Channel
Integer Input _MXD Not Required Mux Channel Data
Integer Output _MXO Not Required Mux Channel Select
Boolean Output _VTO Not Required Valve Test Output
Integer Output _ETO Not Required End Time Output
Integer Output _ESO Not Required End State Output
Table 1 Tag Naming Convention