Table of Contents
Advertisement
7.1 BLOCK AVAILABILITY
• The number of System Inputs and Outputs is determined by the type
of controller being programmed. Configurations include 6 In/4 Out, 8
In/6 Out and 15 In/9 Out.
• Up to 200 Function Blocks can be used in a program or 5000 bytes
of memory. The Function Blocks must be added in the course of
programming.
• The 8 Keys and the 24 system M bits are automatically available for
every program.
• Inputs, Outputs, System Memory Bits, Extended Inputs, Extended
Outputs, AS-i Outputs, Control Bits, and Keys do not count in the
Function Block total.
7.2 CONNECTING BLOCKS
• Any block that has an output pin can be connected to any block that
has an (unused) input pin.
• System Inputs, Keys, and Memory M bits have output pins only.
• Function Blocks and Outputs both contain input and output pins (the
Display and TimeSwitch Blocks are exceptions).
• Blocks can be connected beginning with an output pin, from "left to
right" on the display, or beginning with an input pin, from "right to left"
on the display.
7.2.1 To connect the blocks from the left to right
1. Select the block providing the data to be output and move to the
right until the output pin is flashing. Press the "+" button to "add" a
block.
2. Choices will appear on the right side of the screen that include
System Outputs (if available), existing Function Blocks that have free
input pins, and the option to add a new function block (AddFB, see
section 7.4.2). Scroll to the preferred option and select using the "OK"
key.
3. The block accepting the signal will display as many of its input pins
as possible. Pins that have been used will show as filled triangles;
pins that are open will show as ">" signs. A "Connect" prompt will
appear on-screen. The current input choice will flash. Scroll to
the desired pin and press the "OK" key to accept. The process is
complete.
7.2.2 To connect the blocks from the right to left
1. Select the block that will be receiving the signal and move left until
an input pin is flashing. Scroll to the desired unused input pin (">").
Press the "+" key to begin the connection process.
2. Because output pins may have multiple connections, all the Keys,
Function Blocks, System Inputs, Outputs will show on the left of the
screen as well as an option to "AddFB" . Scroll to the preferred option
and Press the "OK" key.
3. The chosen connection will be flashing on-screen along with the
"Connect" prompt. Press the "OK" key to accept.
7.3 DISCONNECT TWO BLOCKS
1. Move to the connection that is to be disconnected.
2. Enter "-" as the disconnect command.
3. A "Disconnect" prompt will appear on-screen. Press the "OK" key to
accept the disconnect
Mitsubishi Electric Automation, Inc.
7.4 METHODS TO CREATE A FUNCTION BLOCK
7.4.1 New FB
To use the New FB option, proceed to the Edit Menu (Chapter 6.4)
using the "ESC" key. Scroll to the New FB option and press the "OK"
key. Scroll to the desired Function Block and press the "OK" key to
create a New FB. The block will appear on the Function Block Diagram
board.
7.4.2 AddFB
When connecting a Function Block, scroll to the AddFB prompt and
press the "OK" key. This invokes the Function Block list. Scroll to the
desired Function Block and choose by pressing the "OK" key. The
Function Block will be shown on the screen with the connecting block.
7.5 FUNCTION BLOCK EDITING
7.5.1 Setup Function Block
Each Function Block has its own individual parameters outlined in
Chapter 9. The Function Blocks might have multiple data screens that
can be altered. As with other menu options, the "ESC" key will move
the screen back to a higher menu option without changing the option
parameters for that screen. If there are multiple data screens in an
option, enter the required data and accept each screen using the "OK"
key. Use the "ESC" key to exit the Function Block.
7.5.2 Change No. of a Function Block
The current FB number is shown on-screen when the option is
selected. Scroll up or down with the "+" or "-" keys to find an open FB
number. Press the "OK" key to accept the new number.
7.5.3 Delete FB
This menu option will Delete the current Function Block. After the
Delete FB is chosen, confirm the delete operation with "OK" or use the
"ESC" key to cancel the function. All connections to the Function Block
will be removed with the block.
7.6 MOVEMENT BETWEEN FUNCTION BLOCKS
7.6.1 Movement Between Unconnected Blocks
Movement between System Inputs, System Outputs, Keys, and M bits
can be accomplished with the "+" and "-" keys. When the block number
is flashing on-screen, press the "+" or "-" key to scroll through the block
numbers. The scroll will go through to the next block after reaching the
highest or lowest number for that block.
7.6.2 Movement Between Connected Blocks
The arrow keys are used to move between connected blocks.
7.6.3 The Jump Command
• The "ESC" key can be used to enter the Edit Menu at any time when
a function block is displayed on the LCD screen. (The "ESC" key will
cancel in-process commands first. Keep pressing the "ESC" key until
the Edit Menu is displayed).
• From the Edit Menu, select the Jump Command. Choose any system
Memory Bit, Input, Output, Key, AS-i Input, AS-i Output, Extended
Input, Extended Output, or existing Function Block by using the front
panel keys.
• Press "OK" to "Jump" to the chosen block in the programming mode.
ALPHA2 QUICK START MANUAL
9
Advertisement
Table of Contents
