FilePLC_Laws - THE PLC LAWS Courtesy of the Members of...

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THE PLC LAWS Courtesy of the Members of MRPLC.COM 2007 Edition Page 1 of 6 Pages Editor - BobLfoot PLC LAW 1 - DON'T OVERCOMPLICATE THE SIMPLE. PLC LAW 2 - MAKE SURE YOU PLUG THE CABLE IN BEFORE YOU TRY TO FIGURE OUT WHY YOU CAN'T GO ONLINE. PLC LAW 3 - DURING STARTUP, ALWAYS VERIFY I/O BEFORE TESTING THE PROGRAM PLC LAW 4 - WHEN CONNECTING YOUR LAPTOP TO THE PLC, DON'T TIGHTEN THE SCREWS ON THE SERIAL CABLE AT THE LAPTOP SIDE. PLC LAW 5 - READ THE MANUAL BEFORE TRYING TO INSTALL/COMMISSION AN UNFAMILIAR PIECE OF HARDWARE. PLC LAW 6 - ALWAYS HAVE ALL POSSIBLE BACKUP FILES (PLUS READ FROM PLC ETC.) BEFORE STARTING ANY CHANGES. .. PLC LAW 7 - ALWAYS DOUBLE CHECK YOU HAVE THE RIGHT CABLES FOR YOUR CPU TYPE AND BACKUP INSTALL SOFTWARE WITH YOU BEFORE YOU STEP ON THE PLANE. PLC LAW 7.1 - WHEN WORKING IN A LAN OR WAN ENVIRONMENT ALWAYS TRIPLE CHECK PROCESSOR ID'S BEFORE ERASING AND DOWNLOADING NEW CODE. PLC LAW 8 - EACH VENDOR HAS THEIR OWN PROGRAMMING SOFTWARE, SO PLAN ACCORDINGLY. PLC LAW 8.1 - SOME VENDORS SOFTWARE MAY NOT PLAY WELL WITH OTHERS. .. SEE RSLINX. .. PLC LAW 8.2 - ORDER THE CORRECT SOFTWARE FROM YOUR VENDOR INSTEAD OF ASKING FOR IT ON MRPLC
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THE PLC LAWS Courtesy of the Members of MRPLC.COM 2007 Edition Page 2 of 6 Pages Editor - BobLfoot PLC LAW 9 - WHEN POWERING UP A PLC THE FIRST TIME, MAKE SURE THAT THE POWER SUPPLY VOLTAGE SWITCH IS SET TO THE RIGHT VOLTAGE. PLC LAW 10 - TRY TO STAGE AND TEST AS MUCH AS POSSIBLE BEFORE MAKING BIG CHANGES. PLC LAW 11 - SPARES SHOULD NOT SIT OF THE SHELF. THEY SHOULD BE USED FOR TRAINING AND TESING. PLC LAW 11.1 - THERE MUST BE SPARES FOR CRITICAL
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This note was uploaded on 09/28/2009 for the course X RAY MECH EMP5209 taught by Professor Hui-leo-chen during the Fall '09 term at University of Ottawa.

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FilePLC_Laws - THE PLC LAWS Courtesy of the Members of...

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