Omron SYSMAC CVM1 Series Operation Manual page 33

Cable Length and Terminating Resistance Settings
Max. Cable Length
Setting the
Terminating
Resistance Switch
(TER Switch)
18
• 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
Cable type
APF (All Plastic Fiber optic cable)
PCF (Plastic Clad Fiber optic cable) 200 m
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.)
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.
WIRE
4 ↔ 2
TER
ON ↔ OFF
PC LINK
Link Adapter model
3G2A9-AL002-PE
3G2A9-AL004-PE
20 m
Transmission Line Selector Switch
Terminating Resistance Setting Switch
Section 2-4
3G2A9-AL002-E
3G2A9-AL004-E
Cannot be used.
800 m