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IC693PCM300 - GE Fanuc PLC Distributor In Stock! 90-30 90-70 ...

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1<br />

Configuring the PCM for MegaBasic Operation<br />

If the PCM has firmware version 2.50 or greater, it may be configured for BASIC or<br />

BAS/CCM mode using Logicmaster <strong>90</strong> software. With these modes, the MegaBasic<br />

program in RAM: automatically loads and starts on power-up or following a soft reset<br />

(pressing the Restart/Reset pushbutton for less than 5 seconds). A hard reset (pressing<br />

the Restart/Reset pushbutton for 10 seconds) will cause MegaBasic to start in PROGRAM<br />

DEVELOPMENT mode. For more information on MegaBasic operation, see chapter 4,<br />

MegaBasic.<br />

Note<br />

PCMs with firmware versions 2.04 and earlier do not recognize BASIC<br />

or BAS/CCM mode. Using one of these modes will cause a fault to be<br />

posted in the <strong>PLC</strong> fault table for the PCM rack and slot location:<br />

“Unsupported feature in configuration.”<br />

Warning<br />

The UCDF, PCM batch files, and MegaBasic program(s) in the PCM<br />

RAM: device are preserved during a <strong>PLC</strong> power loss by the PCM<br />

battery. The Logicmaster <strong>90</strong> configuration is preserved by the <strong>PLC</strong><br />

CPU battery (Series <strong>90</strong>-<strong>70</strong>) or power supply battery (Series <strong>90</strong>-<strong>30</strong>).<br />

Failure to replace either of these batteries when necessary may prevent<br />

the PCM from operating normally.<br />

PDFsupply.com<br />

1-14 Series <strong>90</strong> Programmable Coprocessor Module and Support Software User’s Manual – November 1999 GFK-0255K

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