Omron CVM1 Series, Operation Manual

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18
Cable Length and Terminating Resistance Settings Section 2-4
Max. Cable Length • Electrical (copper) cable length
The total length of the electrical cables in the PC Link system can be up to
500 m. (Individual branch lines can be up to 10 m long.)
• Optical fiber cable length
If the distance between PLCs exceeds 800 m, use a 3G2A9-AL005-(P)E
or 3G2A9-AL006-(P)E Link Adapter. For details, refer to the C
-Series Link
Adapters Installation Guide (W123-E1-3).
(The 3G2A9-AL005-(P)E and 3G2A9-AL006-(P)E Link Adapters are no
longer being manufactured.)
Setting the
Terminating
Resistance Switch
(TER Switch)
The basic structure of the PC Link operating level has a main line with extend-
ing branch lines. The Terminating Resistance is turned ON on the two PC Link
Units at the ends of the main line in each PC Link operating level. The Termi-
nating Resistance is turned OFF on all other PC Link Units in the system.
Cable type Link Adapter model
3G2A9-AL002-PE
3G2A9-AL004-PE
3G2A9-AL002-E
3G2A9-AL004-E
APF (All Plastic Fiber optic cable) 20 m Cannot be used.
PCF (Plastic Clad Fiber optic cable) 200 m 800 m
WIRE
4
↔
2
TER
ON
↔
OFF
PC LINK
Terminating Resistance Setting Switch
Transmission Line Selector Switch