CJ1G-CPU4

@P

5

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)

CJ1G-CPU42P (LCB01)

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:

2,400

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

Note: 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.

Item

Description

Operation cycle: Maximum number of loops

0.01 s: 20 loops

0.1 s: 100 loops

1 s: 150 loops

0.02 s: 35 loops

0.2 s: 150 loops

2 s: 150 loops

0.05 s: 70 loops

0.5 s: 150 loops

Operation cycle: Maximum number of loops

0.01 s: 20 loops

0.1 s: 25 loops

1 s: 25 loops

0.02 s: 25 loops

0.2 s: 25 loops

2 s: 25 loops

0.05 s: 25 loops

0.5 s: 25 loops