Instruction manual

4. WIRING
IMR01Y06-E6
13
4.4 Connection to Controller
Conduct wiring between the COM-JC and controller (FB100/400/900) as shown in the following.
When conducting wiring to the FB100/400/900, always conduct wiring to the
Communication 1 terminal.
 Communication terminal number and signal details
Terminal No.
Signal name Symbol
FB100 FB400/900
13 25 Signal ground SG
14 26 Send/receive data T/R (A)
15 27 Send/receive data T/R (B)
 Wiring [FB400/900] (Connections are similar for the FB100)
RS-485
y
y
y
Paired wire
Shielded twisted
pair wire
FB400/900
Communication terminals
(communication 1 side)
FB400/900
Maximum controller connections: 31 controllers
R2
If communication errors occur frequently due t
o
the operation environment or the communication
distance, connect termination resistors.
25
T/R (B)
T/R (A) 26
27
SG
25
T/R (B)
T/R (A) 26
27
SG
COM-JC
T/R (A)
SG
T/R (B)
4
1
5
R1
Terminal block
Communication terminals
(communication 1 side)
(−)
(+)
(−)
(+)
(−)
(+)
R2: Termination resistor for external
connection (Example: 120 Ω 1/2 W)
R1: Internal termination resistor
(120 Ω 1/2 W)
For the termination resistors, refer to 4.5 Installation
of Termination Resistor (P. 14).
The cable and termination resistors must be provided by the customer.
The termination resistor existing within the COM-JC can be connected or disconnected by
the switch. (Factory set value: Termination resistor connected)