CPU General Specifications
3–4
CPU Specifications and Operation
CPU General Specifications
Features
DL430
DL440
DL450
Total Program memory (words)
6.5K
14.5K / 22.5K*
22.8K / 30.8K*
Ladder memory (words), built-in
3.5K
7.5K / 15.5K*
7.5K / 15.5K*
V-memory (words)
3.0K
7.0K
15.3K
Scan Time, typical (1 K boolean)
8 – 10 mS
2 – 3 mS
4 – 5 mS
Run time edit
No
Yes
Yes
Programming
Yes
Yes
Yes
Handheld programmer with cassette tape interface
Yes
Yes
Yes
DirectSOFT32 programming for Windows
Yes
Yes
Yes
Built-in communication ports
2 ports
2 ports
4 ports
CMOS RAM
No
w/mem. cartridge
w/mem. cartridge
UVPROM
No
w/mem. cartridge
w/mem. cartridge
EEPROM
Standard on CPU
w/mem. cartridge
w/mem. cartridge
FLASH RAM
No
No
Standard on CPU
CoProcessor modules
Yes
Yes
Yes
Networking modules
Yes
Yes
Yes
RS232C/RS422 Data Comm. Module
Yes
Yes
Yes
1152
1664
3584
Local I/O / Local expansion I/O / Remote I/O
640
640
4096
Remote I/O
512 max.
1024 max.
2048 max.
Remote I/O Channels
2
2
3
Local discrete input points maximum
320
320
1024
Local discrete output points maximum
320
320
1024
Local analog input channels maximum
320**
320**
512**
Local analog output channels maximum
320**
320**
512**
Maximum number of channels / masters (remote
or slice) per local CPU base
2
2
2
Remote I/O Distance
3300 ft. (1000m)
3300 ft. (1000m)
3300 ft. (1000m)
Discrete I/O Module Point Density
8/16/32/64
8/16/32/64
8/16/32/64
Slots per Base
4/6/8
4/6/8
4/6/8
CPU Specifications
and Operation
RLL and
RLL PLUS
Compatible with:
Total I/O
Total I/O available as:
* The first values represent CPUs using the 7.5K memory cartridge and the second value is for using 15.5K
memory cartridges.
** Additional Discrete and Analog I/O can be supported (within the power budget) through the use of remote I/O.
DL405 User Manual, 3rd Edition, Rev. E
CPU Specifications and Operation
DL430
DL440
DL450
Number of instructions available (see Chapter 5 for
a description of the available instructions)
113
170
210
Control relays
480
1024
2048
Special relays (system defined)
288
352
512
384
1024
1024
V-memory
3072 words
7168 words
15360 words
Timers
128
256
256
Counters
128
128
256
Immediate I/O
Yes
Yes
Yes
Interrupt input
8 points
16 points
16 points
Subroutines
No
Yes
Yes
For/Next Loops
No
Yes
Yes
Drum Timers
No
No
Yes
Math
Integer
Integer
Integer and
Floating Point
PID Loop Control, built-in
No
No
16 loops
Time of Day Clock/Calendar
No
Yes
Yes
Internal diagnostics
Yes
Yes
Yes
Password security
No
Yes
Yes, multi-level
System and user error log
No
Yes
Yes
Battery backup
Yes
Yes
Yes
Stages in
RLL PLUS
CPU Electrical Specifications
Parameter
DL430/DL440/DL450
DL440/450DC–1
DL440/450DC–2
Input Voltage, Nominal
120 VAC
24 VDC
125 VDC
Input Voltage Range
100–120 VAC and
196–240 VAC
+10% –15%
20–29 VDC
100–132 VDC
+10% –15%
Input Voltage Ripple
N/A
less than 10%
less than 10%
Inrush Current, maximum
20 A
10 A
20 A
Power Consumption, maximum
50 VA
38W
30 W
Voltage withstand (dielectric strength)
1 min. at 1500 VAC between primary, secondary, field ground and run
relay
Insulation resistance
> 10MW at 500 VDC
Output Voltage, auxiliary power supply
20–28 VDC (24 nominal), ripple more than 1V P-P
(N/A on DL440–DC–1 and DL440–2)
Output Current, auxiliary power supply
24 VDC @ 400 mA maximum
DL405 User Manual, 3rd Edition, Rev. E
CPU Specifications
and Operation
Feature
3–5
3–6
CPU Specifications and Operation
CPU Hardware Features
The following diagram shows the main external features of the DL405 CPUs.
DL430/DL440 CPUs
Status indicators
Keyswitch
(mode select)
Port 0
(programming, MMI)
CPU Specifications
and Operation
Wiring Terminals
CPU Battery
Slot for DL440
Memory Cartridge
(optional on DL450)
DL450 CPU
Status indicators
Wiring Terminals
Port 1
(programming, MMI)
DIP Switch Config.
(battery, station address, baud rate)
Keyswitch (mode select)
Port 2
(programming, MMI)
Port 0
(programming, MMI)
CPU Battery
Port 1
(programming, MMI)
Slot for optional
Memory Cartridge
Port 3
(remote I/O, network)
DL405 User Manual, 3rd Edition, Rev. E
CPU Specifications and Operation
Communication
Ports
Port 0
Specifications
430 440 450
3–9
DL405 CPUs provides up to four communication ports. The DL430/DL440 CPUs
have two ports, while the DL450 CPU has a total of four ports.
The first port (all CPUs) is located on the 15 pin D-shell conector. It is for general
programming such as DirectSOFT32, or operator interface connections. The
D4–HPP handheld programmer can only be used on this port on the CPU. The
operating parameters for Port 0 are permanently set to the values shown.
S 15 Pin female D type connector
S Protocol: K sequence
S RS232C, non-isolated, distance within 15 m (approx. 50 feet)
S 9600 baud, 8 data bits, 1 start, 1 stop bit, odd parity
S Asynchronous, Half duplex, DTE
Port 0 Pin Descriptions (All CPUs)
Port 0
9
8
15
15-pin Female
D Connector
Port 1
Specifications
430 440 450
Port 1 (all CPUs) is located on the 25-pin connector, and is called the “secondary
comm port” for the DL430/DL440 CPUs. The secondary comm port address is
stored in the memory cartridge along with the I/O configuration. It is for general
programming such as DirectSOFT32, operator interfaces, and networking, but it
cannot connect to the handheld programmer. Port 1 provides additional features
such as programmable baud rate, parity, ASCII/Hex mode and network address. Its
RS422 signals support multidrop networking and programming applications.
The baud rate and station address override is selected by dip switches on the rear of
the DL430/DL440 CPUs. The DL450 uses Aux functions to set the same parameters
(it has no DIP switches). RS232C or RS422 is selected by cabling to the proper
signal pin sets on the connector. Parity, ASCII/Hex mode and station address are
selected by AUX (auxiliary) functions with a programming device.
S 25 Pin female D type connector
S Protocols: K-sequence, DirectNet. The DL450 additionally supports
Non-Sequence and MODBUS protocols. (Note: The DL430 cannot
support K–sequence on ports 0 and 1 simultaneously. Use DirectNet on
port 1 if port 0 is used for communications).
S RS232C / RS422, Selectable address 1–90 (use Aux function)
S 300/ 600/ 1200 / 2400 / 4800 / 9600 / 19200 / (38400 DL450 only) baud
S Hex / ASCII modes (use Aux function to configure)
S 8 data bits, 1 start, 1 stop bit, Odd, Even or No parity
S Asynchronous, Half duplex (use Aux function to configure), DTE
DL405 User Manual, 3rd Edition, Rev. E
CPU Specifications
and Operation
1
1
YOP
Sense connection between HPP and CPU
2
TXD
Transmit Data (RS232C)
3
RXD
Receive Data (RS232C)
4 ONLINE Request Communication (TTL)
5 ABNO CPU Error (TTL)
6 PRDY CPU ready to communicate (TTL)
7
CTS
Clear to Send (RS232C)
8
YOM Sense connection between HPP and CPU
9
–
Not Used
10 LCBL Sense cable connection (TTL)
11
5V2
5 VDC for HPP logic
12
5V2
5 VDC for LCD backlight
13
0V
Logic ground
14
0V
Logic ground
15
0V
Logic ground
3–10
CPU Specifications and Operation
Port 1 Pin Descriptions (All CPUs)
Port 1
1
14
13
25
CPU Specifications
and Operation
25-pin Female
D Connector
Port 2
Specifications
430 440 450
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
–
TXD
RXD
RTS
CTS
–
SG
–
RXD+
RXD–
CTS+
–
–
TXD+
–
TXD–
–
RTS–
RTS+
–
–
–
CTS–
–
–
Not used
Transmit Data (RS232C)
Receive Data (RS232C)
Request to Send (RS232C)
Clear to Send (RS2332C)
Not used
Signal ground (RS232C/RS422)
(port 3 on DL450)
Receive Data + (RS422)
Receive Data – (RS422)
Clear to Send + (RS422)
(port 3 on DL450)
(port 3 on DL450)
Transmit Data + (RS422)
Not used
Transmit Data – (RS422)
Not used
Request to Send – (RS422)
Request to Send + (RS422)
Not used
Not used
Not used
Clear to Send – (RS422)
(port 3 on DL450)
(port 3 on DL450)
The operating parameters for Port 2 on the DL450 CPU are configurable using Aux
functions on a programming device.
S 6 Pin female modular (RJ12 phone jack) type connector
S Protocols: DirectNet (slave only), K sequence, Non-procedure
S RS232C, 300 / 600 / 1200 / 2400 / 4800 / 9600 / 19200 / 38400 baud
S 8 data bits, 1 start, 1 stop bit; odd, even, or no parity
S Nodes – from 1 to 90
Port 2
Port 2 Pin Descriptions (DL450)
1
6
1
2
3
4
5
6
0V
5V
RXD
TXD
5V
0V
Power (–) connection (GND)
Power (+) conection
Receive Data (RS232C)
Transmit Data (RS232C
Power (+) conection
Power (–) connection (GND)
6-pin Female
Modular Connector
NOTE: The 5V pins are rated at 200mA maximum, primarilly for use with some
operator interfaces.
DL405 User Manual, 3rd Edition, Rev. E
CPU Specifications and Operation
Port 3
Specifications
430 440 450
3–11
The operating parameters for Port 3 on the DL450 CPU are configurable using Aux
functions on a programming device.
S
S
S
S
S
S
S
25 Pin female D type connector
Protocols: DirectNet, K-sequence, Remote I/O, MODBUS master or
slave
RS422, non-isolated, distance within 1000 ft (3280 ft.)
300 / 600 / 1200 /2400 / 4800 / 9600 / 19200 / 38400 baud (DirectNet,
K-sequence, MODBUS protocols),19200 / 38400 (Remote I/0 protocol)
8 data bits, 1 start, 1 stop bit, odd/none/even parity
Hex / ASCII modes (use Aux function to configure)
Selectable address 1–90 (use Aux function to configure)
Port 3 Pin Descriptions (DL450)
Port 3
1
25
25-pin Female
D Connector
–
–
SG
TXD+
TXD–
–
–
–
–
–
RXD+
RXD–
A drawing summarizing the pin locations
and functions of ports 1 and 3 on the
25-pin connector is to the right. The two
logical ports share two ground pins, but
have separate communications data pins.
When using both logical ports, you will
probably have to make a custom
connector which divides the signals in two
for two separate cables.
Not used
(port 1)
(port 1)
(port 1)
(port 1)
Not used
Signal ground
Not used
(port 1)
(port 1)
(port 1)
Transmit Data (+), (RS422)
Transmit Data (–), (RS422)
(port 1)
Not used
(port 1)
Not used
(port 1)
(port 1)
Not used
Not used
Not used
(port 1)
Receive Data (+), (RS422)
Receive Data (–), (RS422)
CPU Specifications
and Operation
13
14
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
Two Logical Ports on
the 25 Pin Connector
Port 3
Port 1
TXD
RXD
RTS
CTS
0V
RXD+
RXD–
CTS+
TXD+
TXD–
RTS–
RTS+
0V
CTS–
TXD+
TXD–
RXD+
RXD–
DL405 User Manual, 3rd Edition, Rev. E
8–2
PID Loop Operation (DL450 only)
DL450 PID Loop Features
Main Features
The DL450 process loop control offers a sophisticated set of features to address
many application needs. The main features are:
S
S
S
S
S
S
Up to 16 loops, individual programmable sample rates
Manual/ Automatic/Cascaded loop capability available
Two types of bumpless transfer available
Full-featured alarms
Ramp/soak generator with up to 16 segments
Auto Tuning
Maintenance
and Troubleshooting
PID Loop Operation
(DL450 Only)
NOTE: The D4–450 CPU’s PID algorithm now supports the use of 16-bit analog inputs
and outputs, auto tuning and other advanced features. This CPU requires
DirectSOFT32 Version 3.0c Build 58 (or later) and CPU firmware version 1.9 (H8) and
2.446 (SH) (or later) to implement those features. See our website for more information:
www.automationdirect.com.
The DL450 CPU has process control loop capability in addition to ladder program
execution. You can select and configure up to sixteen loops. All sensor and actuator
wiring connects to standard DL405 I/O modules, as shown below. All process
variables, gain values, alarm levels, etc., associated with each loop reside in a Loop
Variable Table in the CPU. The DL450 CPU reads process variable (PV) inputs
during each scan. Then it makes PID loop calculations during a dedicated time slice
on each PLC scan, updating the control output value. The control loops use the
Proportional-Integral-Derivative (PID) algorithm to generate the control output
command. This chapter describes how the loops operate,and what you must do to
configure and tune the loops.
Analog or Digital Output
DL450 CPU
PID Loop Calculations
Manufacturing Process
Analog Input
The best tool for configuring loops in the DL450 is the DirectSOFT32 programming
software, Release 2.0 or later. DirectSOFT32 uses dialog boxes to create a
forms-like editor to let you individually set up the loops. After completing the setup,
you can use DirectSOFT32’s PID Trend View to tune each loop. The configuration
and tuning selections you make are stored in the DL450’s FLASH memory, which is
retentive. The loop parameters also may be saved to disk for recall later.
DL405 User Manual, 3rd Edition, Rev. E
8–3
PID Loop Operation (DL450 only)
Number of loops
Selectable, 16 maximum
CPU V-memory needed
32 words (V locations) per loop selected, 64 words if using ramp/soak
PID algorithm
Position or Velocity form of the PID equation
Control Output polarity
Selectable direct-acting or reverse-acting
Error term curves
Selectable as linear, square root of error, and error squared
Loop update rate (time
between PID calculation)
0.05 to 99.99 seconds, user programmable
Minimum loop update rate
0.05 seconds for 1 to 4 loops, 0.1 seconds for 5 to 8 loops , and
0.2 seconds for 9 to 16 loops
Loop modes
Automatic, Manual (operator control), or Cascade control
Ramp/Soak Generator
Up to 8 ramp/soak steps (16 segments) per loop with indication of
ramp/soak step number
PV curves
Select standard linear, or square-root extract (for flow meter input)
Set Point Limits
Specify minimum and maximum setpoint values
Process Variable Limits
Specify minimum and maximum Process Variable values
Proportional Gain
Specify gains of 0.0 to 99.99
Integrator (Reset)
Specify reset time of 0.0 to 99.99 in units of seconds or minutes
Derivative (Rate)
Specify the derivative time from 0.00 to 99.99 seconds
Rate Limits
Specify derivative gain limiting from 1 to 20
Bumpless Transfer I
Automatically initialized bias and setpoint when control switches from
manual to automatic
Bumpless Transfer II
Automatically set the bias equal to the control output when control switches
from manual to automatic
Step Bias
Provides proportional bias adjustment for large setpoint changes
Anti-windup
For position form of PID, this inhibits integrator action when the control
output reaches 0% or 100 % (speeds up loop recovery when output
recovers from saturation)
Error Deadband
Specify a tolerance (plus and minus) for the error term (SP–PV), so that no
change in control output value is made
Alarm Feature
Specifications
Deadband
Specify 0.1% to 5% alarm deadband on all alarms
PV Alarm Points
Select PV alarm settings for Low–low, Low, High, and High-high conditions
PV Deviation
Specify alarms for two ranges of PV deviation from the setpoint value
Rate of Change
Detect when PV exceeds a rate of change limit you specify
DL405 User Manual, 3rd Edition, Rev. E
Maintenance
Specifications
PID Loop Operation
(DL450 Only)
PID Loop Feature
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