1
PNSPO!
Model
CJ1W-CTS21-E
Synchronous Serial Interface (SSI) Unit
INSTRUCTION SHEET
(NJ-series Controllers)
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 Operation
and Programming Manuals for your NJ-series Controller system.
Keep this instruction sheet for future reference.
OMRON MANUFACTURING OF THE NETHERLANDS B.V.
OMRON Corporation 2012
All Rights Reserved
! DANGER
Do not attempt to take the Unit apart and do not
touch any internal parts while the power is being
supplied. Doing either of these may result in
electrical shock, and serious or fatal injury.
! Caution
Leave the protective label on top of the Unit as long
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 LED 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 configuration device variables to 0. The Unit is now
configured as follows: 400kHz clock frequency, 24 bit Gray-
coded and a 40
µ
s 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 operational device
variables *_Ch1_SSIDat and *_Ch2_SSIDat.
Note: If you only want to connect one SSI encoder, the other SSI
channel has to be disabled. See section Configuration Device
Variables for CJ-series Units for further details.
Unit specifications
Unit type
CJ1 Special I/O Unit
Applicable PLC models
CJ/NJ-series PLCs
Storage temperature
-20 to +75 °C
Ambient temperature
0 to +55 °C
Ambient humidity
10 to 90 % (non-condensing)
EMC compliance
EN 50081-2, EN 61131-2
Current consumption
300 mA (5VDC via bus connection)
Weight
200 g (typical)
Number
of
words
allocated
•
20 Operation Words
•
30 Configuration Words
Dimensions
EXT.PS FOR ENCODERS: 5-24 V DC, 0.8 A max.
CTS21
10
0
x
10
x
1
RUN
CH1
CH2
ERC
ERH
B1
A1
MACH
MACH
MACH
MACH
No
No
No
No
CJ1W-CTS21-E
SSI DATA+CLK:RS-422 Line Driver, 1.5 MHz max.
2-CHANNEL SSI UNIT
PNSPO
OMRON MANUFACTURING OF THE NETHERLANDS B.V.
MADE IN THE NETHERLANDS
Lot No. 000000N0000
Batch No. 000000000
31
65
24
90
95
LED Indicators
Name
Color
State
Unit status
RUN
green
On
Normal operation
Off
Initialisation error
ERC
red
On
Unit error
(check *_ErrCode1/*_ErrCode2)
Off
Unit has no errors
ERH
red
On
NJ CPU Unit error
Off
NJ CPU Unit has no errors
Name
Color
State
Counter channel status
CH1,
CH2
green
On
Channel configured and is
communicating without errors
Off
Channel is not configured or a
communication error has occurred
Machine Number Switch
Name
Function
MACHINE No.
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 NJ 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.
x10
x10
1
0
