3.12
PROGRAMMABLE LOGIC CONTROL (2100 V2.7 SOFTWARE)
The programmable logic controller (PLC) uses signals from a variety of inputs and a factory-installed program to control
the way in which the machine responds to those inputs. One of the main functions of the PLC is to enable the machine to
be set to perform automatic cutting cycles.
The PLC actually consists of two major components:
• The Programmable Logic Controller, mounted in the electrical cabinet with input terminals on the left side, and
output terminals on the right side.
The programmable Logic Controller is connected by a Communication Cable to the:
• Operator Interface, mounted in the control console. The Operator Interface consists of a Display that provides
visual information to the operator, and Keys that permit the operator to send information to the PLC.
The inputs used by the PLC include:
• Control Panel Switches
• Operator Interface Keys
• Head Down Limit Switch
• Head Position / Feed Rate Encoder
• Shuttle Servo Motor Encoder
• Shuttle Home, and Shuttle Overtravel Limit Switches
• Out-of-stock Limit Switch
• Blade Speed Proximity Switch
• Blade Door and Shuttle Guard Interlock Switches
PLC Parameters are a table of normally xed values what can be modied to adjust the way in which the machine oper-
ates.
To gain access to the Parameters, either to observe the current settings, or to make changes:
• In Manual Mode, with Front Vise Switch in ‘Close”
• Press the Fwd and Rev Keys simultaneously (no more than 0.5 sec apart).
• The Display will prompt for a password that is available from the Hyd-Mech Service Department.
• When the correct password is entered, the Display will show the rst two lines of the Parameter Table
• Use the Up / Down Navigation Keys to move up and down through the table.
• Use the Left / Right navigation Keys to move the cursor to the Entry Position (on the right end of each parameter
line).
• Use the Enter Key to toggle between Yes / No or On / Off type parameter settings.
• Use Number Keys to overwrite Numerical Parameters, and then the Enter Key to enter the new parameter value.
The following table lists and explains the PLC Parameters used with this software.
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