iDect FC6A series User Manual page 465

Wiring Example
When Connecting the CPU Module via RS485
FC6A-PC3
RS485
Two-pair Two-core Shielded
Twisted-pair Cable
A B SG A B SG
Terminating
Resistance
FE
Wiring example when connecting CPU modules via RS485
External Device/O/I Communication Cables
(FC6A-KC1C)
Shielded Cable
(8-core, UL-certified Product,
CAT 5 or higher)
Terminal Block
Terminating Resistance
Two-pair Two-core Shielded
Twisted-pair Cable
CPU Module*
*1 The wiring for Serial Port 1 (RJ45
connector) on the CPU module is
entirely the same.
We do not recommend connecting the SG line using a shielded cable.
Since the shield of the "FC6A-KC1C external device/O/I connection cable" will be connected to FE (or PE) of the CPU module, one
end of the shield will be grounded when connected to FE (or PE) of the CPU module.
When communication quality is unstable, add terminating resistance matched to the characteristic impedance to both ends of the
cable. Use resistance with a rating of 1/2 W or higher.
External Device/O/I Communication Cables
Terminating
Resistance
(8-core, UL-certified Product, CAT 5 or higher)
Pin Description
1 RD
2 SD
3 ER
4 A
5 B
6 DR
7 NC
8 SG
Shell Shield
1
CPU Module*
Serial Port 1
(RJ45 connector)
Terminal Block
Two-pair Two-core Shielded
Twisted-pair Cable
Pin Description
White/Orange RD
1
Orange SD
White/Green ER
Blue A
White/Blue B
Green DR
White/Brown NC
Brown SG
Shield
CPU Module*
FE
Serial Port 1
(RJ45 connector)
FC6A S M S A
ERIES ICRO MART
(FC6A-KC1C)
Shielded Cable
White/Orange
Orange
White/Green
Blue
White/Blue
Green
White/Brown
Brown
FE
CPU Module*
Terminal Block
Two-pair Two-core Shielded
Twisted-pair Cable
External Device/O/I Communication Cables
(FC6A-KC1C)
1
2
3
4
5
6
7
8
Shell
1
Shielded Cable
(8-core, UL-certified Product, CAT 5 or higher)
- -O T U ' M
LL IN NE YPE SER S ANUAL
Pin Description
1 RD White/Orange
2 SD Orange
3 ER White/Green
4 A Blue
5 B White/Blue
6 DR Green
7 NC White/Brown
8 SG Brown
Shell Shield
CPU Module
FE
Serial Port 1
(RJ45 connector)
1
Terminal Block
Terminating Resistance
FC9Y-B1722
A
PPENDIX
A-15