Block setup – CONTREX CX-1200 User Manual

Page 162

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Block Setup

Use the blocks to assign eight different values to a single Control Parameter. Up to sixteen Control
Parameters can each be assigned to each of the eight different blocks.

Up to sixteen Control Parameters are
assigned to the blocks in Edit Block Parms.

Each one of the Control Parameters that was
assigned in Edit Blocks Parms (above) can be
assigned eight different parameter values in the
Edit Block (0-7) screens.

The block (Edit Block 0-7) that is active
determines which of the eight values is used.

BLOCK SETUP

Edit Block Parms

Edit Block 0
Edit Block 1
Edit Block 2
Edit Block 3
Edit Block 4
Edit Block 5
Edit Block 6
Edit Block 7

You can use either the PLC or the Keypad to change the active block.

To use the PLC to change the active block:
There are 3 PLC bits that are associated with the block selection: Block Select A, Block Select B and Block
Select C. Make bits active by setting the bit equal to “1”. Select the active block in a binary (octal). The
following table represents the PLC Bit logic:

BlkSel C

BlkSel B

BlkSel A

Active Block

To use the Keypad to change the active block:
Transfer control to the keypad by entering “2” (kypd) in Blk Sel Source (CP-478). To make a block active,
enter the block's number in Keypad Blk Sel (CP-479). The active block is displayed in Active Block
(MP-51).

DANGER

When you change the active block, the new values
are loaded and can operate the system immediately.
This can cause abrupt operation.

For more information on selecting and monitoring the active block, refer to System Monitoring (MP) / System
Monitor / Control Overrides.

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