User manual

Toolbox 32 User Manual 1.47d www.cse-semaphore.com/mykingfisher

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Ladder Logic - Inputs

Each type of ladder input block has a 12-character comment field that is used to describe the active state of

the block (ie. when it is logically TRUE). For a single parameter block, the comment is used as a tagname (a

data descriptor) to describe the active state of that parameter eg. Pump1Running. For multiple parameter

blocks, the comment can be used to describe the purpose of the block eg. Lev>HiSetpt?

Input blocks include: Contact, Compare, Logical Mask, Edge Trigger and Timer.

Note: A function block Call can also be used as an input. Please see the topic Ladder Logic – Outputs,

Function and Program Blocks.

Ladder Logic - Comment Block

Can contain up to 64 ASCII characters.

Ladder Logic - Horizontal Bar

(SHIFT+F2) A horizontal bar allows ladder blocks to be connected together. A horizontal

bar is always TRUE and can have a 12-character comment.

Ladder Logic - Vertical Bar

(SHIFT+F3) Each input block has a tick box Vertical Bar. When ticked, a vertical bar will be

inserted on the right, lower side of the block. A vertical bar is always TRUE and allows blocks to be linked

between rungs.

Ladder Logic - Contact

Test Bit: Any addressable bit. Eg. #R1.5, #DI14.1, #YSYS.SCAN1, #YPST2.1, #NR2.1.5, #ND2.14.1. For

more Test Bit options, please see the appendix - RTU Data.

Normally Open Contact

Block is true when the Test Bit is ON (or closed). As used in the topic Example - Initialising Variables On

First Scan.

Normally Closed Contact

Block is true when the Test Bit is OFF (or open).