Omron CJ1W-CTS21-E Instruction Sheet

Model
CJ1W-CTS21-E
Synchronous Serial Interface (SSI) Unit
INSTRUCTION SHEET
Thank you for purchasing an OMRON product. Read this
instruction sheet thoroughly and familiarise yourself with the
functions and characteristics of the product before using it. To
ensure safe and correct use of this Unit, also read the following
Operation Manual (Cat. No. W393-E1): SYSMAC CJ1 Series
Programmable Controllers.
Keep this instruction sheet for future reference.
OMRON MANUFACTURING OF THE NETHERLANDS B.V.
 OMRON Corporation 2004
Do not attempt to take the Unit apart and do not
! DANGER
touch any internal parts while the power is being
supplied. Doing either of these may result in
electrical shock, and serious or fatal injury.
Leave the protective label on top of the Unit as long
! Caution
as the Unit is not mounted and wired completely, in
order to prevent wire clippings or other materials
from getting inside the Unit. When the mounting and
wiring has been completed, the label must be
removed to allow air circulation and heat radiation.
Nomenclature
Unit status indicators
•
RUN (green)
•
ERC (red)
•
ERH (red)
•
CH1, CH2 (green)
Machine number rotary switches
Removable Terminal Block
• Connections for SSI-encoders
• Connection for power supply SSI-encoders
Terminal Block latch
•
Slide down to remove
•
Slide up to lock

Quick Start

1. Set all DM-settings to 0. The Unit is now configured as follows:
400kHz clock frequency, 24 bit Gray-coded and a 40µs
monoflop time, for both SSI channels.
2. Set Machine Number.
3. Mount and wire the Unit, the two SSI encoders and the
encoders power supply.
4. Turn power on.
5. Create I/O Table.
6. Both green CH1 and CH2 indicators should now turn on.
7. The encoder data can now be read from CIO n+10/11 and CIO
n+15/16.
PNSPO
All Rights Reserved
1634330-1A
Note: If you only want to connect one SSI encoder, the other SSI
channel has to be disabled in DM m+20, see section Configuring the
Unit via DM for further details.

Unit specifications

Unit type
Applicable PLC models
Storage temperature
Ambient temperature
Ambient humidity
EMC compliance
Current consumption
Weight
Number of words
allocated
Dimensions
31
CTS21
RUN ERC ERH
CH1
CH2
B1 A1
M ACH
N o
x 10 1
0
x 10
90

LED Indicators

Name Colour
RUN green
ERC red
ERH red
Name Colour
CH1, green
CH2
Machine Number Switch
Name
MACHINE No.
1
x10
0
x10
1
CJ1 Special I/O Unit
CJ1-series PLCs
-20 to +75 °C
0 to +55 °C
10 to 90 % (non-condensing)
EN 50081-2, EN 61131-2
300 mA (5V via busconnection)
200 g (typical)
•
20 CIO-words. First word
allocated = CIO2,000 + (Nx10)
•
30 DM-words. First word
allocated = D20,000 + (Nx100)
24
65
CJ1W-CTS21-E
P N SP O
2-CHANNEL SSI UNIT
SSI DATA+CLK:RS-422 Line Driver, 1.5 MHz max.
EXT.PS FOR ENCODERS: 5-24 V DC, 0.8 A max.
Lot No. 000000N0000 Batch No. 000000000
OMRON MANUFACTURING OF THE NETHERLANDS B.V.
MADE IN THE NETHERLANDS
State Unit status
On Normal operation
Off Initialisation error
On Unit error (check CIO n+6, n+7)
Off Unit has no errors
On CJ1-CPU Unit error
Off CJ1-CPU Unit has no errors
State Counter channel status
On Channel configured and is
communicating without errors
Off Channel is not configured or a
communication error has occurred
Function
Sets the Machine Number (00 – 94).
• Setting Machine Numbers 95-99 will
generate an error.
• Make sure each Machine Number is
used only once per CJ1-CPU.
• The next higher Machine Number should
not be used on any unit, as it would
cause a CIO-data overlap
• Be sure to turn off the power to the Unit
before setting the Machine Number.
95