Transcript SLC 500 Hardware

Identifying SLC 500™
System Components
SLC 500 System Options
 The SLC 500 line of processors
comprises both fixed and modular
processor styles.:
Fixed Hardware
 Fixed SLC 500 processors have a built-in
power supply with I/O modules in one unit.
The following options are available with the
fixed-hardware processor:
 20, 30, or 40 digital I/O points
 Two-slot expansion chassis
 The following graphic shows a fixed SLC 500
processor with 20 I/O points and a two-slot
expansion chassis
SLC 500 System
Modular Hardware
 The following options are available
with the modular-hardware processor:
 Seven power supply types
 Up to 4096 inputs and 4096 outputs
 Five processor types
 The following graphic shows a modular
SLC 5/04 ™ processor:
SLC 500 System
Modular SLC 500 System
Components
 The modular SLC 500 system
components include a power supply,
processor, chassis, and I/O modules.
Power Supply
 Power Supply: A component that
provides system power requirements
for the processor and I/O modules.
 Seven power supplies, three AC-input
power supplies and four DC-input
power supplies, are available:
Power supply
Power supply
Power Supply Nominal Input
Voltage
1746-P1
120V or 220V
AC
1746-P2
120V or 220V
AC
1746-P3
24V DC
1746-P4
120V or 220V
DC
1746-P5
125V DC
1746-P6
48V DC
1746-P7
12V DC
24V DC
Backplane
Output Current
2A at 5V DC
5A at 5V DC
3.6A at 5V DC
10A at 5V DC
5A at 5V DC
5A at 5V DC
2A at 5V DC
3.6A at 5V DC
Power supply
 All power supplies have a lightemitting diode (LED) that indicates
proper power supply. Power supplies
are designed to withstand brief power
losses (between 20 ms and 3 s) without
affecting the operation of the system.
Processor
 Processor: A component that acts as the
brain of the system, receiving information
from input devices via the I/O system,
making decisions based on that information,
and then sending information to the output
devices via the I/O system.
 SLC 500 processors offer a wide range of
choices in memory, I/O capacity, instruction
set, and communications ports. The following
table lists characteristics of the modular
processors:
SLC 500 Processor
Processor Type
I/O
Instruction
Memory
SLC 5/01
960 total
1K or 4K
SLC 5/02
4096/4096
4K
SLC 5/03
4096/4096
8K or 16K
SLC 5/04
4096/4096
16K,32K, or
64K words
SLC 5/05
4096/4096
16K,32K, or
64K words
SLC 500 Processor
TYPE
SLC 5/01 SLC 5/01 SLC 5/02 SLC 5/03 SLC 5/03 SLC 5/03 SLC 5/04 SLC 5/04 SLC 5/04 SLC 5/05 SLC 5/05 SLC 5/05
PART # 1747
L511
L514
L524
L531
L532
L533
L541
L542
L543
L551
L552
L553
MEMORY
1K
4K
4K
8K
16 K
32 K
16 K
32 K
64 K
16 K
32 K
64 K
CURRENT/5 VDC
90 mA
90 mA
90 mA
500 mA 500 mA 500 mA 1000 mA 1000 mA 1000 mA 1000 mA 1000 mA 1000 mA
0 mA
0 mA
175 mA 175 mA 175 mA 200 mA 200 mA 200 mA 200 mA 200 mA 200 mA
CURRENT/ 24 VDC 0 mA
DISCRETE I/O max
7880
8192
8192
CHASSIS/Slots
3/30
3/30
3/30
DH-485 DH-485
COMM. On board
DH-485
SLAVE SLAVE
MEMORY MODULE EEPROM EEPROM EEPROM
PROG. LANG.
RS LOGIX 500
PROG. INST.
SCAN TIME
52
52
71
8192
8192
8192
8192
8192
8192
8192
8192
8192
3/30
3/30
3/30
3/30
3/30
3/30
3/30
3/30
3/30
DH-485 & DH-485 & DH-485 & DH+ & DH+ & DH+ &
ETHERNET & RS-232
RS-232 RS-232 RS-232 RS-232 RS-232 RS-232
FLASH EEPROM
107
107
107
107
107
107
107
107
107
8 ms/K 8 ms/K 4.8 ms/K 1 ms/K 1 ms/K 1 ms/K 0.9 ms/K 0.9 ms/K 0.9 ms/K 0.9 ms/K 0.9 ms/K 0.9 ms/K
Processor
 The following features are specific for
each processor type:
 Memory capacity
 Complexity of available instruction set
 Communications options
 Time required to execute the control
program
CPU
Run Position: Execute the
program and energizes the
outputs. No editing is
allowed. Can not change the
CPU mode using pc or
programming device.
PROG Position: Program is
not running and all output
are de-energizes. Editing is
allowed. Can not change the
CPU mode using pc or
programming device.
REM mode: Can change the
CPU mode from Run to
Prog. Mode using PC or
programming device.
Chassis
Chassis: A hardware assembly that houses the processor
and I/O modules.
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SLC modular chassis provide the following functions:
Power distribution
Containment of I/O modules
Communication path between I/O modules and processor
SLC modular chassis are available in four sizes:
4-slot
7-slot
10-slot
13-slot
:
Chassis
7
10
Chassis
 A chassis requires a power supply
(which connects to the chassis without
a separate cable) to provide power to
the processor and each I/O slot.
Additionally, chassis can be connected
together to increase the I/O available to
a processor, as shown in the following
graphic:
I/O Modules
 I/O Modules: Electronic plug-in units
used to interface with the input and
output devices in the machine or
process being controlled. Input modules
receive data from input devices and
send it to the processor. Output
modules receive data from the
processor and send it to output devices.
I/O modules
I/O Module
Function
Examples of devices
that connect to
module
Digital/discrete
Sends& receives
on/off signals
Pushbuttons,
indicators, photo
eyes, starters
Analog
Sends& receives
variable
input/output signals
Temperature,
voltage, speed
current devices
Process
Provides process
control
Temperature,
weighing devices
Servo positioning
Provides positioning
control
Hydraulic rams,
encoders
Specialized
Provides specific
functions
Flowmeters,
clutch/brake systems
I/O Module
I/O Module
15
In
EEPROM Memory Module:
 A module that can be inserted into a SLC
500 processor to maintain a copy of the
project in case the processor experiences
either of these situations:
 Memory corruption
 Extended power loss
 Memory module information can be found
under the Mem Module tab of the processor
status file, as shown in the following graphic:
Signal Flow through an SLC
500 System:
 The following graphic
outlines the
sequences of events
from the activation of
machine or process
inputs to the
energizing of machine
or process output
devices:
Communication
 The following terms are associated with network
communications:
 Network: A series of stations (nodes) physically
connected together.
 Node: A device on a network capable of sending or
receiving information.
 Link: The path or physical means established for
transmitting data between two or more locations.
 Baud rate: A unit of signaling speed, across a
communications link, equal to the number of signal
events per second (bits per second).
Network Topologies
 Daisy-Chain
– Each device has two sections of cable tied together
– Each end has termination (resistor/capacitor)
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Examples
DH+
DH-485
Remote I/O
SLC
SLC
SLC
SLC
Network Topologies
 Star
– All devices physically connected at one point
Example
 Ethernet
PLC
PLC
PLC
PLC
A-B Communication Network Terms
serial
RS-232
RS-422
RS-485
DH-485
}
Electrical Connections
}
REMOTE I/O
DF1
DH+
Networks - How to Decide on One?

Maximum number of devices
– How many nodes are required for the application?
– How many nodes should be reserved for future expansion?

Maximum network length
– Usually specified as the physical cable distance from the first node to
the last node on the network
– Drop length is the length of cable from the main cable to the node

Device supported
–
–
–
–
Programmable controllers
Programming devices
Operator Interfaces
Other Computers - PCs, Workstations, Minis, Mainframes...
Data Highway Plus (DH+)
Network:
 A Data Highway Plus ™ (DH+) is a local
area network designed to support remote
programming for factory floor applications. A
DH+ network has the following
characteristics:
 Uses baud rates up to 230.4 kbit/s
 Allows a maximum of 64 (0-77 octal) nodes
 Allows a maximum network length of 3,048
m (10,000 ft) at 57.6 kbit/s
 Communications speed is influenced by
distance within the DH+ network.
Example: DH+ Network
Channel 1 of an SLC 5/04 processor is used to connect to a DH+
network. An example of SLC 500™ processors on a DH+ network is
shown in the following graphic:
DH 485 Network:
 A DH 485 network is a local area network
designed for plant floor applications. DH 485
connections enable you to go online to any
processor on a DH 485 network from one
connection point. A DH 485 network has the
following characteristics:
 Uses baud rates up to 19,200 bit/s
 Allows a maximum of 32 (0-31 decimal)
nodes
 Uses a maximum cable length of 1.2 km
(4,000 ft
Example: DH 485 Network
Channel 1 of SLC 5/01, SLC 5/02, and SLC 5/03 processors is used to
connect to the DH 485 Network. An example of SLC 500 ™
processors on a DH 485 network is shown in the following graphic
RS-232 (Serial) Connection:
 An RS-232 serial port allows you to go online
to a specific processor by connecting to the
communications port of a computer:
 Uses baud rates up to 19,200 bit/s
 Requires physical connection to the processor
to which you want to go online (cannot "see"
other processors on the network)
 Telephone and radio modems can be
integrated into the RS-232 interface, thereby
allowing communications over long
distances.
Example: RS-232 Connection
Channel 0 of SLC 5/03, SLC 5/04, and SLC 5/05 processors is used for
an RS-232 connection. An example of an RS-232 connection is shown
in the following graphic:
Universal Remote I/O Network:
 Universal Remote I/O Link is a local area network
designed to connect controllers to remote I/O chassis
and a variety of intelligent devices such as operator
interfaces and AC or DC drives.
Example: Universal Remote I/O
An example of an SLC 5/04 processor with a 1747-SN scanner module
on a Universal Remote I/O network is shown in the following graphic:
DeviceNet Network:
 DeviceNet is a digital, multi-drop network to
connect sensors, actuators and automation
systems in general.
Example: DeviceNet Network
An example of an SLC 500 processor with a 1747-SDN DeviceNet
scanner module on a DeviceNet network is shown in the following
graphic:
ControlNet Network:
A ControlNet network combines the functionality of Universal
Remote I/O and Data Highway Plus. Control Net is a higher
level, with up to 99 devices on a network.
Generally uses coaxial cable with high level of shielding.
It's purpose is interconnection of PLC units, HMI on the factory
floor level up
To upper management IT level. A ControlNet network has the
following characteristics:
 Uses baud rates up to 5 Mbit/s
 Allows for up to 99 nodes
 Allows data transfer distances of up to 30 km (18.6 miles) using
fiber optic media
Example: ControlNet Network
A SLC 500 processor with a 1747-SCNR ControlNet scanner module
on a segment of a ControlNet network is shown in the following
graphic:
Ethernet/IP Network
 An EtherNet/IP network is a local area
network (LAN) that provides
communications between various devices
at 10 Mbit/s. This network, available for
SLC 5/05 processors, is the fastest SLC
500 communications option. An
EtherNet/IP network has the following
characteristics:
Ethernet/IP Network
 Requires RJ45 connectors on both ends of a
lOBaseT cable
 Requires a PC Ethernet communications card
 Uses baud rates from 10 Mbit/s to 100 Mbit/s
 Allows unlimited nodes on the network with a
maximum of 24 SLC 5/05 (32K and 64K)
processor connections
 Allows connections to the Internet via a 32-bit
IP address
Ethernet/IP Network