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Power supply cables >600V
Own power supply cables
process I/O cables
Cables for communication with
modems = long distance bus
(isolated)
Video cables
Pulse transmission
Cables for communicating without
modems = short distance bus
(RS232, RS422)
Power supply cables >600V
Distance 30 cm
Distance 10 cm
Distance 30 cm
I/O device
Field
Zone
Electronic
Zone
P
R
O
T
E
C
T
I
O
N
B
A
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