42 Fundamental Laws of PLC Programming
42 Fundamental Laws of PLC Programming Dear friends cant stop sharing this with you. The 42 fundamental laws of PLC , a programmer must know this . Courtesy of the Members of MRPLC.COM PLC LAW PLC LAW 1 - don't over complicate 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 al...