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5. PROCEDURES BEFORE SYSTEM OPERATION
5.5.3
As one of the requirements to give full play to AJ71PB96F/A1SJ71PB96F's functions and make up the
system with high reliability, it is necessary to have an external wiring unsusceptible to an influence of
noise. Precautions against external wiring of AJ71PB96F/A1SJ71PB96F is described below.
(1) Do not route the wire of AJ71PB96F/A1SJ71PB96F close to or bundle it together with the
main circuit and high-tension lines, or the load-carrying lines from other than the PC.
Otherwise, the module may be susceptible to an influence of noise and surge induction.
(2) The wires from the input/output modules of the PC should be away from the
communication cable of PROFIBUS-FMS interface module as far as possible as shown in
the figure below.
Precautions Against Wiring
Wiring of input
module
Wiring of output module
Shielded covering
5-8
MELSEC-A
Shield twisted-pair cabl
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