Running The Program; Ipo Cycle; Running State At Start-Up; Event Log Messages - HMS Anybus Edge Reference Manual

HMS Sequence Editor
3.5

Running the Program

Press the start button on the toolbar to start execution of the diagram that has been saved to
the PLC. While the PLC is running, the start button will change to a stop button via which you can
halt the execution.
MER HÄR!
3.5.1

IPO Cycle

The Anybus Edge run-time system executes an IPO cycle (Input-Process-Output) in each cycle.
This cycle includes the following steps:
1. Input – During this step the following inputs will be read:
– Local inputs
– Portal variables
2. Process – During this step the PLC program is being processed. It consists of:
a. I/O mappings
b. Diagram – The diagram executes its own IPO cycle:
3. Output – During this step the following outputs will be written:
– Local outputs
– Portal variables
The cycle time can be configured through the Program settings dialog. Note that events which
persist for a shorter period of time might not be recognized.
3.5.2

Running State at Start-Up

The PLC will store its current running state in non-volatile memory. So if the PLC is running and
you turn the power off, it will start running after next start-up.
3.5.3

Event Log Messages

The following section describes the messages that the PLC may log to the
Messages are prefixed with the text PLC Driver:.
The PLC has been started.
The PLC has been successfully started.
Anybus Edge Gateway Reference Guide
i. Input
– Input elements
– Variable input elements
– Constants
– Special units (see Diagram)
ii. Process
– Other units (see Diagram)
iii. Output
– Output elements
– Variable output elements
23 (148)
Event Log. All
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