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3
SPECIFICATIONS
3.2 Cable Specifications
3.2.2 Coaxial cable
3 - 6
1
OVERVIEW
2
SYSTEM
CONFIGURATION
3
SPECIFICATIONS
4
FUNCTIONS
5
PREPARATORY
PROCEDURES BEFORE
OPERATION
6
LINK DATA SEND/
RECEIVE PROCESSING
AND PROCESSING TIME
7
PROGRAMMING
8
TROUBLESHOOTING
3.2.2 Coaxial cable
The following shows the specifications of a coaxial cable used in the MELSECNET data
link system.
As for a coaxial cable, use "3C-2V" or "5C-2V" (conforming to JIS C 3501) of a high-
frequency coaxial cable.
(1) Specifications of coaxial cable
The following shows the specifications of a coaxial cable.
As for a coaxial cable, choose the one which meets the operating ambient
temperature (0 to 55 ) described in the general specification.
Table 3.6 Specifications of coaxial cable
Item 3C-2V 5C-2V
Structure
Cable diameter 5.4mm 7.4mm
Allowable bend radius 22mm or more 30mm or more
Diameter of internal
conductor
0.5mm (Annealed copper wire) 0.8mm (Annealed copper wire)
Diameter of insulator 3.1mm (Polyethylene) 4.9mm (Polyethylene)
Diameter of external
conductor
3.8mm (Single annealed copper wire mesh) 5.6mm (Single annealed copper wire mesh)
Applicable connector
plug
Connector plug for 3C-2V:
•BNC-P-3-NiCAu-CF (DDK Ltd.)
Connector plug for 5C-2V:
•BNC-P-5-NiCAu-CF (DDK Ltd.)
•BNC-P-5DV SA(41) (HIROSE ELECTRIC CO., LTD.)
Internal conductor
Insulator
External conductor
External sheath