Panasonic FP7 User Manual page 16

Wiring
N o t e
16
 Use double-core twisted-pair shielded wires.
 Ground the shielding of the shielded wire on the load side. How-
ever, depending on the conditions of the external noise, it may
be better to ground the shielding externally or not to ground the
shielding.
 Do not place the analog output wires close to power lines or load
lines other than PLC wires, and do not bundle them with other
wires.
 The NC terminals of the output terminal block are unused. Do
not use these terminals to connect wires because some of the
terminals are connected internally.
FP7 Analog Output Unit User's Manual