RKC INSTRUMENT COM-K User manual

®RKC INSTRUMENT INC.
A
ll Rights Reserved, Copyright 2004, RKC INSTRUMENT INC.
USB Communication converter
COM-K Instruction Manual
IMR01Z01-E3
Thank you for purchasing this RKC product. In order to achieve
maximum performance and ensure proper operation of your new
instrument, carefully read all the instructions in this manual. Please
place this manual in a convenient location for easy reference.
 This is a Class A instrument. In a domestic environment, this
instrument may cause radio interference, in which case the user
may be required to take adequate measures.
 All precautions described in this manual should be taken to avoid
damage to the instrument or equipment.
NOTICE
 This manual assumes that the reader has a fundamental
knowledge of the principles of electricity, process control,
computer technology and communications.
 The figures, diagrams and numeric values used in this manual
are only for purpose of illustration.
 RKC is not responsible for any damage or injury that is caused
as a result of using this instrument, instrument failure or indirect
damage.
 RKC is not responsible for any damage and/or injury resulting
from the use of instruments made by imitating this instrument.
 Periodic maintenance is required for safe and proper operation of
this instrument. Some components have a limited service life, or
characteristics that change over time.
 Every effort has been made to ensure accuracy of all information
contained herein. RKC makes no warranty expressed or implied,
with respect to the accuracy of the information. The information
in this manual is subject to change without prior notice.
 No portion of this document may be reprinted, modified, copied,
transmitted, digitized, stored, processed or retrieved through any
mechanical, electronic, optical or other means without prior
written approval from RKC.
1. PRODUCT CHECK
Before using this product, check each of the following:
• Model code
• Check that all of the accessories delivered are complete.
• Check that there are no scratch or breakage in external
appearance (case, front panel, terminal, etc).
COM–K– 
(1)
(1) Loader communication cable (Option)
N: None
1: With loader communication cable (1.5 m)
If any of the products are missing, damaged, or if your
manual is incomplete, please contact RKC sales office or the
agent.
2. PARTS DESCRIPTION
USB connecto
r
RS-485/RS-422A communication
connecto
r
Display lamp
Loader communication
connector
• Display lamp
Loader power Communication state Lamp state
Standby/during data receive A orange lamp turns onSupply the power
During data send A orange lamp is flashing
Standby/during data receive A green lamp turns onPower not
supplied During data send A green lamp is flashing
3. MOUNTING
 Mounting Cautions
(1) Use this instrument within the following ambient temperature and
ambient humidity.
• Allowable ambient temperature: −10 to +50 °C
• Allowable ambient humidity: 5 to 95 % RH
(Absolute humidity: MAX. W. C 29 g/m3dry air at 101.3 kPa)
(2) Avoid the following when selecting the mounting location:
• Rapid changes in ambient temperature, which may cause
condensation.
• Corrosive or inflammable gases.
• Direct vibration or shock to the mainframe.
• Water, oil, chemicals, vapor or steam splashes.
• Excessive induction noise, static electricity, magnetic fields or noise.
• Direct air flow from an air conditioner.
• Exposure to direct sunlight.
• Excessive heat accumulation.
(3)Mounting consideration
• Install the module 200 mm away from the main power line.
• Ensure at least 50 mm space on top and bottom of the control
unit for maintenance and environmental reasons.
 Dimensions
70 3.5
60 28
φ
3.5
(Unit: mm)
48
39
(13.4)
 DIN rail Mounting
1. Pull down the mounting bracket at the bottom of the module (A).
Attach the hooks on the top of the module to the DIN rail and
push the lower section into place on the DIN rail (B).
2. Slide the mounting bracket up to secure the module to the DIN
rail.
(C) Locked
(B) Push
Mounting
bracket
DIN rail
(A) Pull down
 Panel Mounting
Mount COM-K directly on the panel with screws which are inserted in
the mounting holes of the top and bottom mounting brackets.
Recommended tightening torque: 0.3 N⋅m (3 kgf⋅cm)
The customer needs to provide the M3 size screws. Select
the screw length that matches the mounting panel.
Mounting
dimensions
Accessories
USB cable ....................................................................... 1
3.5 inches floppy disk (USB device driver) ..................... 1
Instruction Manual (IMR01Z01-E3)................................. 1
60
2-M3
39
CAUTION
(Unit: mm)

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: [phone] ([phone]) E-mail: [e-mail]
FAX: [phone] ([phone]) 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)
1SG
2R
Controller
(Example: FB400/FB900)
COM-K
R
R: Termination resistors 120 Ω1/2W
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)
1SG
2
Controller
(Example: FB400/FB900)
COM-K
3
4
5
T (A)
R (A)
25 SG
26
27
RS-485/RS-422A
communication
connecto
r
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 mm2(AWG 26-20).
• Stripping length is as follows.
8 mm (Stripping length)
Conductor cross section:
0.25 to 0.5 mm2(AWG 26-20)
Connector type: FK-MC 0,5/5-S
T
-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/m3dry 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