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CJ1G-CPU4[]P

CJ Series Loop CPU Unit

CJ1G-CPU4[]P

Integrated Loop Control and Sequence Control

Specifications

Item Specification
Product name Loop-control CPU Unit
Model numbers CJ1G-CPU[][]P
Data
exchange
method
with
CPU Unit
Words in Auxiliary
Area in CPU Unit
Loop Controller → CPU Unit:
Operation status, PV error input ON, MV error input ON, occurrence of execution error, function block database error, cold start ready for hot start command, flash memory backup in progress, function blocks changed, etc.
CPU Unit → Loop Controller:
Hot/cold start command at power ON
User allocations
in I/O memory
User memory tables used to allocate function block ITEM data for user-specified memory in the CPU Unit (CIO, Work, HR, DM, or EM Area (bank 0, but also banks 1 to 12 for Ver. 3.0 or later)).
EM Area (bank
number)
allocations (for
SCADA software)
HMI function used allocate function block ITEM data for Control, Operation, External Controller, and System Common blocks in the specified bank of the EM Area in the CPU Unit.
The real PV in calibration mode can be allocated (Ver. 3.0 or later).
Setting None
Indicators Loop-control CPU Units: 2 LEDs (RUN and ready)
Super capacitor backup data All function block data (including Step Ladder Program commands), stored error log data
Super capacitor backup time CJ Series (CJ1G-CPU[][]P): 5 min at 25 ° C (Backed up by the Battery in the CPU Unit.)
Data stored in flash memory Function block data
Backup from RAM to flash memory Executed from CX-Process Tool (as required).
Recovery from flash memory to RAM Automatic at power ON if startup mode is set for a cold start, or executed from CX-Process Tool (as required).
Influence on CPU Unit cycle time Loop-control CPU Unit (CJ1G-CPU[][]P): 0.8 ms max. (Depends on function block contents.)
Current consumption
(supplied from Power Supply Unit)
Loop-control CPU Unit: 1.06 A at 5 VDC
Note: Increased by 150 mA when NT-AL001 Link Adapter is used.
Standard accessories None

Function Specifications

Item Description
Operation method Function block method
Number of
function
blocks
Total
CJ1G-CPU42P: 71 blocks max., CJ1G-CPU43/44/45P: 501 blocks max.
Analog
operation
Control
Blocks
PID and other control functions LCB01: 50 blocks max.,
LCB03: 300 blocks max.
Control
Blocks
Blocks
Alarm, square root operation, time operations, pulse train operation, and other operation functions for various processes
Sequential
Control
Step
Ladder
Program
block
Logic sequence and step sequence functions 4,000 commands max.
100 commands/1 block max.
Can be divided into 100 steps max.
100 commands/1 step max.
I/O block Field
Terminal
block
Analog I/O function with Analog I/O Unit, contact I/O function with Basic I/O Unit 80 blocks max.
User
link
tables
Analog data I/O and contact data I/O function for CPU Unit
Can be added to CSV tags.
2,400 data max.
HMI
function
I/O function for function block ITEM data for Control, Operation, External Controller, and System Common blocks for CPU Unit Control/Operation Blocks
LCB01: 50 blocks max. + 20
send/receive words
LCB03: 300 blocks max. + 20
send/receive words
System Common Block
20 send/receive words
Real PV Input Monitor Area
LCB01: 50 words max.
LCB03: 300 words max.
System Common block System common operation cycle setting, run/stop command, load rate monitor, etc. Single block
Function block data preparation/
download
Function block data prepared by CX-Process Tool (sold separately) and downloaded to Loop Controller
Execution
of
function
blocks
Function
block
execution
conditions
Common
to all
function
blocks
Operation of all function blocks by turning power ON to the PLC (Hot or cold start can be specified.) For cold starts, function block data is transferred from flash memory to RAM.
Function block operation can be stopped by CX-Process Tool or FINS command.
Hot start (state active before Board was stopped is continued before operation is started) or cold start (all state signals and function block internally held values are cleared before operation is started) is possible by CX-Process Tool or FINS command.
For
individual
function
block
Function block operation can be stopped and hot start (state active before Unit was stopped is continued before operation is started) is possible by CX-Process Tool or FINS command.
Function block
operation cycle
Standard:
Operation of all function blocks is executed at the same operation cycle preset to ITEM 004 in the System Common block.
Settable operation cycles: 0.1 s, 0.2 s, 0.5 s, 1 s, 2 s (default: 1 s)
Note: Cannot be set to the same operation cycle for some function blocks.
Option:
Operation of individual function blocks is executed at the same operation cycle preset to ITEM 004 in the System Common block.
Settable operation cycles: 0.01 seconds, 0.02 seconds, 0.05 seconds, 0.1 seconds, 0.2 seconds, 0.5 seconds, 1 second, and 2 seconds (default: 1 second)
Note:
The external I/O response cycle on a single control loop does not necessarily match the operation cycle. The response cycle is heavily dependent on the CPU Unit's cycle time. (See the external I/O response cycle item below.)
Function blocks
supporting
high-speed operation
The following operation cycles can be set for the blocks listed below: 0.01, 0.02, and 0.05 s.
Control/Operation blocks: Block Models 016, 150, 151, 155 to 157, 167, 182 to 184, 186, and 221 to 224
Sequence control and Field Terminal blocks
Execution
of
function
blocks
LCB load rate The "LCB load rate" refers to the ratio between the actually applied execution time and preset operation cycle.
The maximum value and current value are displayed for each operation cycle group on the CX-Process Tool.
A LCB load rate of 80% or less is required in all operation cycle groups.
When the load rate exceeds 80% for 6 seconds, the LCB load rate automatically changes to the next longer operation cycle. (This is called the "automatic operation cycle switching function.")
Note:
The High Load Alarm Flag (A42408) turns ON if the load rate exceeds 80% for 6 seconds consecutively (non-fatal Inner Board error). (If execution is not possible within the operation cycle, the operation cycle will be extended.) If this happens, select the function blocks that can have longer operation cycles and increase their operation cycles. If the load rate is still too high, processing of the function blocks must be separated for processing by additional Loop Control Units.
External I/O response cycle The time from external input of analog signals up to external output of analog signals on a single control loop depends on the function block's operation cycle and the CPU Unit's cycle time.
Internal
Operation
Number of control
loops
The maximum number of loops that can be used if the LCB load rate is 80% for a standard applications (e.g., with each loop consisting of one Ai4 Terminal, Segment Linearizer, Basic PID, and A04 terminal) is shown in the following table.
CJ1G-CPU43P/44P/45P (LCB03)
Operation cycle: Maximum number of loops
0.01 s: 20 loops 0.02 s: 35 loops 0.05 s: 70 loops
0.1 s: 100 loops 0.2 s: 150 loops 0.5 s: 150 loops
1 s: 150 loops 2 s: 150 loops
CJ1G-CPU42P (LCB01)
Operation cycle: Maximum number of loops
0.01 s: 20 loops 0.02 s: 25 loops 0.05 s: 25 loops
0.1 s: 25 loops 0.2 s: 25 loops 0.5 s: 25 loops
1 s: 25 loops 2 s: 25 loops
Number of operations
for process
(excluding control)
LCB01: Max. 50 blocks
LCB03: Max. 30 blocks
Sequential
control
(Use only
one or the
other)
Step
ladders
LCB01: Max. 20 blocks per Board and total max. 2,000 commands per Board
LCB03: Max. 200 blocks per Board and total max. 4,000 commands per Board
Loop Controllers common: Divisible to 100 commands max. per block and 100 steps max. per block (100 commands max. per step)
Control
method
PID control PID with 2 degrees of freedom
Possible control type
combinations
Basic PID control, cascade control, feedforward control, sample PI control, dead time compensation, PID control with differential gap, override control, program control, time-proportional control and other control types can be achieved by combining function blocks.
Alarm Integrated into PID
block
4 PV alarms (high/high limit, high limit, low limit, low/low limit) per PID block, 1 deviation alarm
Alarm block High/Low Alarm block, Deviation Alarm block
Internal analog signal Min. - 320.00% to max. +320.00%
Scaling of the engineering units depends on the CX-Process Tool (sold separately).
Operating status monitor method Executed by commercially available SCADA software. In the SCADA software, CSV tags set on the
CX-Process Tool are specified.
External
I/O
External I/O signals By data exchange with Analog I/O Unit via the Field Terminal block Total number of I/O points:
(max. 8 points on Analog Input Unit or Analog Output Unit, or max. 96 points on Basic I/O Unit) × 80 blocks
External contact I/O
signals
By data exchange with Basic I/O Unit via the Field Terminal block
CPU Unit analog data
I/O
By data exchange with CPU Unit I/O memory via user link tables Total number of I/O points: 2400
CPU Unit contact data
I/O
By data exchange with CPU Unit I/O memory via user link tables
Analog/contact I/O
with SCADA software
Data transfer between Loop Controller and I/O memory in CPU Unit for Control, Operation, and External Controller blocks using HMI function CJ1G-CPU42P: 2,040
CJ1G-CPU43/44/45P: 12,040
FINS command to
Loop Controller
Read/write of ITEMs in Loop Controller function blocks and execution of run/stop commands are possible from the CPU Unit (including other networked nodes) or host computer by issuing the following FINS commands to the Loop Controller.
READ MULTIPLE ITEMS IN FUNCTION BLOCK (0240 HEX)
WRITE MULTIPLE ITEMS IN FUNCTION BLOCK (0241 HEX)
READ ITEM IN MULTIPLE FUNCTION BLOCKS (0242 HEX)
WRITE ITEM IN MULTIPLE FUNCTION BLOCKS (0243 HEX)
READ UNIT INFORMATION (0501 HEX)
ECHOBACK TEST (0801 HEX)
READ ERROR LOG (2102 HEX)
CLEAR ERROR LOG (2103 HEX)
System
common
status
signals
Status output signal
for sequence control
Constantly ON flags, constantly OFF flags, clock pulse (ON/OFF every 0.5 and 1 seconds)
Clock timing output
signal
Differential output at 00:00 every day, noon every day, every 10 minutes, every minute and every 10 seconds
Note: The CPU Unit's clock data are read as these clock data.
Calendar/clock output
signal
Year, year/month, month/hour, day/time, hour/minute and minute/second
Noye: The CPU Unit's clock data is read as these clock data.
Error display By front panel indicators: hardware test error, function block database error, battery error
Storage of function block execution-related error codes to ITEM 003 of each function block: source/destination designation error, illegal function block combination, illegal parameter, etc.

Software Specifications

The following software (sold separately) is required to use the Loop Controller:
• CX-Process Tool (included in CX-One): Tool for preparing function block data (essential)

CX-Process Tool Specifications

Item Specification
Product name CX-Process Tool (Included in CX-One Package)
Applicable PLCs CS/CJ-series
Applicable
computer
Computer IBM PC/AT or compatible
Operating system
(OS) *1 *2
Japanese or
English System
Microsoft Windows XP (Service Pack 3 or higher), Vista or 7
CPU Proceccor recommended by Microsoft.
Memory Memory recommended by Microsoft.
Hard disk Approx. 2.8 GB or more of available memory is required to install all of the CX-One.
Display XGA (1,024 × 768). High Color (16-bit) or higher.
Disk Drive CD-ROM or DVD-ROM drive
Software that must be installed
with the CX-Process Tool
CX-Server or FinsGateway
Connecting
method
Connection
with CPU Unit
(or Serial
Communications
Board/Unit)
Using FinsGateway
Serial Unit Driver
Communications protocol with PLC: Host Link or Peripheral Bus *2
Connect the computer to the peripheral port or built-in RS-232C port of the
CPU Unit, or the RS-232C port of a Serial Communications Unit/Board.
Connecting cable:
When connecting to the CPU Unit peripheral port: CS1W-CN[][][] (2 m, 6 m)
When connecting to the CPU Unit's RS-232C port: XW2Z-[][][]-[] (2 m, 5 m)
Using CX-Server Communications protocol with PLC: Host Link or Peripheral Bus
(The compatible connecting cables are the same as the ones shown above
for the FinsGateway connection.)
Connection
via Controller
Link
Using FinsGateway
CLK (PCI) Driver
Install the driver in a computer equipped with a Controller Link Support
Board (PCI slot) to support communications between the computer and
PLCs equipped with a Controller Link Unit.
Using FinsGateway
Controller Link
Driver or CX-Server
Install the driver in a computer equipped with a Controller Link Support
Board (ISA slot) to support communications between the computer and
PLCs equipped with a Controller Link Unit.
Connection
via Ethernet
Using FinsGateway
ETN_UNIT Driver
or CX-Server
Install the driver in a computer equipped with an Ethernet to support
communications between the computer and PLCs equipped with an
Ethernet Unit.
Offline operation functions Setting of function block ITEM data (including System Common block settings)
Software wiring of analog signals
Inserting, and printing text-string comments (memos) in block or ladder diagrams.
Describing Step Ladder Program block commands
Creating sequence tables
Online operation functions Downloading of function block data (download/upload to and from Loop Controller)
Run/stop command for Loop Controller (all function blocks)
System monitor run status: Monitoring/manipulation of System Common block (Block Model 000)
(including monitoring of LCB load rate)
Loop Controller monitor run status: Confirmation of function block wiring operation (including
operation stop/stop cancel on each function block), confirmation of Step Ladder Program operation,
and validation of sequence tables
Initializing Loop Controller memory (RAM)
Autotuning PID constants and other parameters.

*1. CX-One Operating System Precaution:
      1) System requirements and hard disk space may vary with the system environment.
      2) Except for Windows XP 64-bit version.
*2. Peripheral Bus cannot be used when FinsGateway V3 is used.
Note: The CX-Process functions that can be used depend on the version. For details, refer to the operation manuals (Cat.
           No.: W372-E1-[] and W373-E1-[]).