System and Control Options

6.0SYSTEM AND CONTROL OPTIONS

The System and Control menu allows you to configure the Liqui-tect panel—setting up inputs and outputs and system features such as date and time. This menu also provides a vehicle for mapping points, clearing latched alarms and deleting records from the Liqui-tect panel’s alarm and trend logs.

The arrows ↑↓ are used to scroll through the menu. The Enter key is used to select the menu item and enter new information. Table 7 shows characters that may be entered in labels and values.

Table 7 Valid characters for data entry

Alphanumeric

A-Z, 0-9

Special characters

space ! " # $ % & ( ) * + - / , . ; < = > @

The System and Control options require a password to prevent unauthorized users from making changes to the system.

This section presents step-by-step instructions for each of the following:

Login - enter the password

Setup System - configure the Liqui-tect panel, system features

Reset Latched Alarm - clear and reset any latched alarms

Clear Alarm History - delete all records from the Alarm History Log

Clear Zone Trend - delete all records from the Zone Trend Log

6.1Login

Users must enter a password to access any of the system and control options. The password consists of four characters (see Table 7 for valid characters).

The default password is AAAA. Changing the password to “0000” eliminates the login requirement and prevents the login screen from appearing. (To set up or change the password, see 6.8.1 - Change Password.)

To log in:

• From the Main Menu, use the arrows ↑↓ to choose System and Control, then press Enter , as shown at right.

Use the arrows ↑↓ to choose System and Control, and press Enter . The Login menu appears.

To enter your password:

Use the arrows ↑↓ to choose a character.

Press Enter to advance to the next character position.

When finished, press Enter again.

Main Menu

VIEW STATUS

> SYSTEM AND CONTROL

↑↓ =NEXT

=SELECT

Login

LOGIN

AAAA

↑↓ =SELECT =NEXT/END

System & Control Menu

>SETUP SYSTEM

RESET LATCHED ALARM

CLEAR ALARM HISTORY ↑↓ =NEXT =SELECT

CLEAR ZONE TREND

The System and Control Menu appears next, with these options that are described in the following sections:

Setup System (Section 6.2 - Section 6.8)

Reset Latched Alarm (Section 6.9)

Clear Alarm History (Section 6.10)

Clear Zone Trend (Section 6.11)

NOTE

If, after logging in, you press the ESC key to return to a previous screen that is not password- protected, you must log in again, including entering your password if you wish to access password-protected functions.

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Emerson MC68HC16Z1 user manual Login, Valid characters for data entry, Alphanumeric Special characters

MC68HC16Z1 specifications

The Emerson MC68HC16Z1 is a versatile microcontroller that combines power and efficiency, making it an ideal choice for various embedded applications. As part of the Motorola 68HC16 series, the MC68HC16Z1 is designed to deliver robust performance while offering extensive support for both simple and complex tasks. With its 16-bit architecture, this microcontroller is well-equipped to handle a range of functionalities, from industrial control systems to automation processes.

One of the main features of the MC68HC16Z1 is its high-performance 16-bit CPU, which operates at speeds up to 20 MHz. This allows for efficient data processing and execution of instructions, which is critical in time-sensitive applications. The microcontroller boasts a rich instruction set, including various addressing modes that enhance programming flexibility. This versatility enables developers to implement efficient algorithms tailored to their specific application needs.

Power management is another noteworthy characteristic of the MC68HC16Z1. The device supports low-power operation modes, which is essential for battery-powered applications or scenarios where energy consumption is a concern. With its capability to switch between different operational states, the microcontroller can significantly extend battery life while ensuring that performance is not compromised.

The MC68HC16Z1 also includes an integrated analog-to-digital converter (ADC) that allows for direct interaction with analog signals. This feature is particularly beneficial in applications that require sensor data acquisition. Additionally, the microcontroller provides various communication interfaces, including serial communication options like UART and SPI, facilitating seamless data transfer between devices.

In terms of memory, the MC68HC16Z1 supports a wide range of options, including both RAM and ROM, allowing for flexible storage solutions depending on the application requirements. The built-in programmability further allows for updates and modifications to the firmware, ensuring that the system can adapt to evolving project specifications.

Moreover, the microcontroller features an extensive array of I/O ports, making it capable of interfacing with various peripheral devices such as sensors, actuators, and displays. This extensive connectivity enhances its usability in a range of applications, from robotics to automotive systems.

In summary, the Emerson MC68HC16Z1 microcontroller stands out for its balanced blend of performance, low power consumption, and feature-rich design. Its 16-bit architecture, integrated ADC, versatile communication interfaces, and extensive memory options make it a go-to choice for developers looking to create effective and reliable embedded systems. Whether for industrial automation or consumer electronics, the MC68HC16Z1 continues to be a dependable and powerful component in the realm of microcontroller technology.