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5 loop & function blocks – Micromod MOD: MODCELL Application Builder Software User Manual

Page 74

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Application Builder

CONFIGURATION

RDOM Remote Digital Output Module. Reference IB-23G600 Section 6.4.

This block represents one or more digital output channels at an
address (1-31) on a CS31 remote I/O bus. Connect MODOUT of the
RIO block to MODIN of this block. Note that a summary page displays
the source or local data for this channel. Pressing the CfgPg button
displays the full configuration page. Modules with remote digital
outputs are:

ICSO 08 R1 (8 relay output channels 2A)
ICSO 08 Y1 (8 transistor output channels 24Vdc 2A)
ICSK 20 F1 (8 isolated relay output channels)
ICSC 08 L1 (8 channels for 24VDC 500mA transistor output)

5.5

LOOP AND FUNCTION BLOCKS

Function blocks (those blocks that execute the logic) cannot operate
independently in the instrument data base. Groups of related function blocks
must be organized into loops. To create a loop, a loop compound block must
be established. Select the loop compound system resource icon from the
Instrument Library.

The execution order of blocks is indicated by the number in the upper right
corner of the block if enabled to do so in the preferences section.

NOTE: The execution order alone does not guarantee that loops are executed

consecutively. To guarantee that loops are executed consecutively,
they must also be assigned to the same scan group number. Consult
the data base reference book for further information on scan groups.

5.5.1 Loop Block Selection

Loop function blocks can only be placed in a loop compound. The loop block
is available in the loop library group as a system resource and is automatically
placed in a new loop compound. Only one Loop block is allowed in a loop
compound.

LP

Loop Block. Reference IB-23G600 Section 3.5. This block provides
master loop control for the function blocks found between it and the
next loop block in the database. This includes write access for a
controlling source and group control of function block execution.

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