User guide

Software
890 USE 108 00 August 2001 59
Compact
Loadable
Software
Instructions
You can add loadable instructions to the resident instruction set.
The following table describes the loadable software instructions that are available
for Compact.
For more information about these instructions, see the Modicon Ladder Logic Block
Library User Guide (840 USE 101 00) or the manual that describes the respective
loadable.
Three-Nodes FNxx Allows you to develop your own custom loadable function blocks.
Modicon part number SW-AP98-GDA.
DRUM
and ICMP
Simplifies implementation of sequential step-oriented logic.
Modicon part number SW-AP98-SxA.
EARS Supports an event/alarm recording system by tracking and
reporting time-stamped messages. Modicon part number SW-
AP9D-EDA.
HLTH Detects changes in the I/O system and reports problems on an
exception-only basis. Modicon part number SW-HLTH-D8L.
Gxxx Measures gas flow using several industry standards. Modicon
part number 309 ULD 455 00. E984-251/255, E984-258/265/
275/285 supports all gas functions. A984-141/145, E984-241/
245 supports GD92 and G392 only.
XMIT Transmit for sending Modbus messages from master PLC to
multiple slave PLCs or to ASCII printers. Modicon part number
309 COM 455 00. E984-241/245/251/255 only
Note: For every 10 bytes of.EXE that are loaded, you lose one node of ladder logic
if you are using an A984-1xx, E984-24x/251/255 PLC model, or an E984-258/265/
275/285 PLC model.