Owner's manual

Operating Characteristics 3-1
3 Operating Characteristics
3.1 Overview
This section describes the operating characteristics of the Equipment.
3.2 Communications States
The Equipment represents the current state of its SECS link using a Communication Finite State Machine
diagram. The purpose is to make clear how this link is initiated and terminated. The Communications
State is displayed in the GEM status bar and the SECS/GEM tab of the Fluidmove Run Window.
Initially, the INITCOMMSTATE variable is set to place the Equipment into the Disabled state at power-
up. Once Fluidmove has completed initialization, Fluidmove will change the Communications State to
the default communication state selected by the user. The loss of communications during Running or
Pausing will not affect the ability of Fluidmove to complete operations in the Process Program. However,
automatic reestablishment of the Process State may require manual intervention if Fluidmove has
changed state during the loss of communications period.
3.2.1 Communications Finite State Description
Figure 3-1 illustrates the Communications Finite State Machine that the Equipment maintains.
 NOTE Refer to Table 3-1 for definition of numbers used in Figure 3-1.
Communications State
Enabled
C
1
4
6
Disabled
Not
Communicating
Communicating
5
2
3
Figure 3-1 Communication Finite State Diagram