The first edition:
DEC. 2004 [IMQ00]
The third edition:
AUG. 2005 [IMQ00]
®
RKC INSTRUMENT INC.
HEADQUARTERS: 16-6, KUGAHARA 5-CHOME, OHTA-KU TOKYO 146-8515 JAPAN
PHONE: 03-3751-9799 (+81 3 3751 9799)
E-mail: [email protected]
FAX:
03-3751-8585 (+81 3 3751 8585)
AUG. 2005
4. WIRING
Wiring Cautions
To avoid noise induction, keep communication signal wire away
from instrument power line, load lines and power lines of other
electric equipment.
Method to connect
(1) For loader communication
Connected to loader
communication connector of
the controller
(FB400/FB900)
Connected to USB
port of a personal
computer
USB cable
Loader communication
cable (W-BV-01)
[Option]
USB
communication
converter
COM-K
Connected to USB
connector
Connected to loader
communication connector
While loader communication is being performed,
DO NOT turn on or off the instrument power supply
(e.g. FB400/FB900). The loader may be stopped.
Please refer to our web site http://www.rkcinst.com for
how to communicate to FB series with a COM-K.
The COM-K can be connected at either the power turned ON
or OFF of the controller. When the power of the controller is
turned off, COM-K supplies power to the controller after
approximately 2 seconds.
While the power is being supplied from the COM-K, the
“
−−−−
” is displayed on the PV/SV display of the controller.
(2) For RS-485/RS-422A communication
RS-485/RS-422A
Connected to USB
port of a personal
computer
USB cable
Connected to
communication terminals
of controller
(Example: FB400/FB900)
USB
communication
converter
COM-K
Connected to USB
connector
Connected to
RS-485/RS-422A
communication
connector
Connector pin configuration
1 2 3 4 5
RS-485/RS-422A
communication
connector
[RS-485] [RS-422A]
Pin No. Signal name Symbol
Pin No.
Signal name Symbol
1
Signal ground
SG
1
Signal ground
SG
2
Send data/
Receive data
T/R (A)
2
Send data
T (A)
3
Send data/
Receive data
T/R (B)
3
Send data
T (B)
4 *
Unused
4
Receive data
R (A)
5 *
Unused
5
Receive data
R (B)
* Do not connect wires to 4 and 5 pins. Malfunction may result.
Connection diagram
Shielded twisted
pair wire
T/R (A)
T/R (B)
1
SG
2
R
Controller
(Example: FB400/FB900)
COM-K
R
R: Termination resistors 120
Ω
1/2W
3
4
5
T/R (A)
T/R (B)
25 SG
26
27
RS-485/RS-422A
communication
connector
Communication terminals
(communication 1 side)
[RS-485]
Shielded twisted
pair wire
T (A)
R (A)
1
SG
2
Controller
(Example: FB400/FB900)
COM-K
3
4
5
T (A)
R (A)
25 SG
26
27
RS-485/RS-422A
communication
connector
Communication terminals
(Communication 1 side)
[RS-422A]
28
29
T (B)
R (B)
T (B)
R (B)
Attention in connector wiring
•
The lead wires use the stranded wire.
•
Use the stranded wire from size 0.25 to 0.5 mm
2
(AWG 26-20).
•
Stripping length is as follows.
8 mm (Stripping length)
Conductor cross section:
0.25 to 0.5 mm
2
(AWG 26-20)
Connector type: FK-MC 0,5/5-ST-2,5
(Products by Phoenix contact Ltd.)
Installation of USB device driver
Installs an USB device driver in a personal computer before use.
1.
Connect COM-K to USB port of a personal computer.
2.
Install an USB device driver from attached floppy disk according
to an on screen instruction.
5. SPECIFICATIONS
USB function
Interface:
Based on USB Ver. 2.0
Communication speed: Full speed (12 Mbps)
Connection:
Connected by universal USB cable
(Mini-B connector)
Power source method: Bus power (The power is supplied from the
USB port on the personal computer side)
Compatible OS:
Windows XP/ 2000 Professional/ Me/
98 Second Edition
Communication function
Interface:
Based on RS-485, EIA standard
Based on RS-422A, EIA standard
Connection
method: 2-wire system, half-duplex multi-drop
connection (RS-485)
4-wire system, half-duplex multi-drop
connection (RS-422A)
Synchronous method: Half-duplex start-stop synchronous type
Communication speed: 2400 bps, 4800 bps, 9600 bps, 19200 bps,
38400 bps
Data bit configuration: Start bit:
1
Data bit:
7 or 8
Parity bit: Without, Odd or Even
Stop bit:
1 or 2
Protocol:
Protocol depends on application of the
personal computer side
Number of connecting controllers
Maximum 31 controllers (RS-485, RS-422A)
Termination resistor:
Externally connected (RS-485)
General specifications
Power supply voltage: 5 V DC
±
5
%
(Supplied by USB bus cable)
Current consumption: 150 mA max. (Loader communication)
60 mA max. (RS-485/RS-422A communication)
Allowable ambient temperature range:
−
10 to
+
50
°
C
Allowable ambient humidity range:
5 to 95 %RH (Non condensing)
Absolute humidity:
MAX.W.C 29 g/m
3
dry air at 101.3 kPa
Weight:
Approx. 40 g
To prevent electric shock or instrument failure, turn off the
power before connecting or disconnecting the instrument
and peripheral equipment.
!
WARNING