3-12 Safety: This is no difficult job, which benefits much less expensive it is to pay attention to the computer casing grounded!
Because:
CPU 226 is grounded to prevent electric mothy the balance mail.
Computers and CPU communicate directly with electricity through metal casings (no Photo coupler) through RS 485.
All Computers are working with the source sWITCHING (vibration source), or Ground wire also known as its ground wire has a very strong static electricity.
static electricity will follow PORT 0 to LOAD CELL CPU and went on to form the load-cell matrix A huge electrostatic field. If it gets wet or vapor detector matrix (Extra Insulation) it will disrupt communication ports PORT 0 is the LOAD CELL sometimes!
According to our subjective, any damage to Port 0 of the CPU 226 are by ungrounded computer casing or computer disassembly when ground communications cables still attached to the COM port - now recommends to customers attention!
to land computer shells we use single-piece plastic-coated wire section 1.5 mm2 long enough, the first two ends with two top rope reinforced with two tight squeeze for 3 or 4mm screw sizes. One end secured to the rope catching computer casing (Where seldom be removed) and the other end secured to catch common grounding point console.
Necessary to remove the communication cable from the COM port any or unplug the computer out of the electrical outlet before removing ground wire for 226 CPU will void the warranty if Port 0 damaged by static electricity. Hanoi 25 May 04 2009
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