Simulator Control for Modicon Quantum Safety CPU

Introduction

The dialog box is shown if the simulator is simulating a CPU from the Modicon Quantum safety family.

Representation of the dialog box:

CPU Front Plate

The virtual CPU front plate shows the current state of the safety CPU in a display:

Text in the display	The simulated CPU is in state...	Meaning
Init	INIT (Initialization)	This display is shown for a very short time while the simulator is starting. It is quickly replaced by one of the following displays.
UnCfg	NOCONF (no configuration)	No user project loaded or the loaded project is invalid.
Idle	IDLE	The project loaded on the CPU has not been started or reset with the Reset command button.
Stop	STOPPED	No project is running. However, the loaded project was in RUN state at least once.
Run	RUN	A project with at least one task is running.
Halt	HALT	An error has occurred in the project. The simulated CPU must be reinitialized or reset using the Reset command button.
Err	ERROR	An unrecoverable detected error has occurred in the project. This means communication is no longer possible. The simulated CPU must be reset using the Reset command button.
S	Safety Mode	The project is running in safety mode. For further information on the different modes please refer to the Unity Pro XLS Software Specifics manual.
M	Maintenance Mode	The project is running in maintenance mode. For further information on the different modes please refer to the Unity Pro XLS Software Specifics manual.

Safety/Maintenance Mode (Safety Projects)

For switching between safety and maintenance mode please pay attention to the following special features:

Switching from safety to maintenance mode in Control Expert XLS Software is only possible, if the simulator key switch is unlocked (see table below).
Switching from maintenance to safety mode can be done by setting the key switch position of the simulator to locked.
If the simulator is in maintenance mode and Control Expert XLS Software is disconnected from the simulator, it is automatically set to safety mode.

NOTE: The CPU simulator has no double code execution of the logic and comparison of the results. Therefore the execution behaves the same in safety and maintenance mode.

For further information on the different modes please refer to the Unity Pro XLS Software Specifics manual.

Key Switch

By clicking the switch symbol, various switch positions can be simulated:

Switch position	Switch position on real CPU	Meaning
	Start	CPU unlocked: Project can be loaded. CPU can be started or stopped.
	Mem Prt	CPU locked: Project can not be loaded. As opposed to the key switch on a real CPU, the CPU can be started or stopped in this position.
-	Stop	This switch position of a real CPU is not supported by the simulator.

Reset

With this button, you can reset the simulated CPU. This corresponds to a cold start of the CPU (the connection between the Control Expert and the simulator is broken, project variables are reset).

This command button corresponds to the reset button on a real CPU.

Power Cycle

With this button, you simulate a cold start of the CPU as a safety CPU does not support warm start. The connection between Control Expert and the simulator is broken, the simulator goes into the state RUN (autostart active) or STOP (autostart deactivated).

This command button corresponds to the power off and power on of a real power supply.

Simulation

Dialog box fields: Host PC name: DNS name of the host PC for the simulator. If the PC has multiple network cards, only the first is shown. Host IP address: TCP/IP address of the host PC for the simulator. If the PC has multiple network cards, only the first is shown. Project name: Name of the project loaded in the simulator.

Clients Connected

The list shows current clients connected with the PC (PCs which are connected via TCP/IP with the host PC of the simulator). The DNS name and TCP/IP address are shown for each client.