Modbus Status Indicators; A00 Defaults Menu; A01 Menu Lock; Menu Lock Code Entry - Zener MSC-3 Instruction Manual

MSC-3 Start Up
• G167 Terminator: If necessary each MSC-3 is capable of terminating the EIA-485 network.
Setting this parameter to ENABLED will terminate the line.
• G168 Comms Lost Time: Check the time interval is greater than the system scan interval.
• G169 Serial No.: Each MODBUS device has a name, which is required to be unique. To ensure
that there are no duplicated names, the MSC-3 serial number is used as part of the device object
name.
3. Connect the MSC3 to the MODBUS network.

MODBUS Status Indicators

Several displays are available in the service menu to check network activity and state.

A00 DEFAULTS Menu

This menu provides several choices regarding save and load of parametric defaults including security
against unintended changes and default Run display.
A factory default is preloaded to serve as an initial configuration for the MSC-3. Commissioning
personnel may make changes as required by the application. When all changes have been made, the
option to save the new setup is provided by saving the active set of parameters to the "Commissioned
defaults".
Saving a current set of parameters to commissioned defaults allows further parametric changes to be
made for testing or temporary operations purposes. When these conditions are no longer required, the
commissioned defaults may be reloaded. Alternatively factory defaults may be loaded.
This menu also provides the means to invoke the upload or download of parameters between the MSC-
3 and a computer via a USB connection. Refer to the "Enable Upload/Download connection" section for
details.

A01 Menu Lock

Available Choices:
Press  once to begin.
Use the ▲/ ▼ buttons to enable or disable the menu lock.
Press  to confirm the choice.
This feature protects the entire menu mode with a code so that settings and configurations are protected
from unauthorised or unintentional changes.

Menu Lock Code Entry

When the A01 MENU LOCK is enabled, each time the menu mode is entered the following message will
appear:
• The code to access the menus is fixed to "1470". Press the  button once to begin.
• Use the ▲ & ▼ buttons to set each code digit and  to set to the next digit.
• After all digits have been entered correctly, the first menu will appear.
66
A01 MENU LOCK
> UNLOCKED
UNLOCKED
LOCKED
ENTER Code:
9999
IM00120 IM00120