AB 1747-L531 , SLC 5/03 Processor Module 8K Memory DH-485 And
RS-232/DH-485 Ports
Technical Specifications for 1747-L531
Manufacturer | Rockwell Automation |
Brand | AB |
Part Number/Catalog No. | 1747-L531 |
Series | SLC 500 |
Inputs | 4096 |
Module Type | SLC 5/03 Processor |
Outputs | 4096 |
Programming software: | RSLogix500 software |
Analog I/O | 180 |
Memory: | Up to 8 KB, Battery Backed-RAM |
Program Scan Time | 1 ms/K |
User Memory | 8,000 Words |
I/O Chassis | 3 |
Chassis Module Slots | 30 |
I/O Scan Time | 0.225 milliseconds |
Communication | DH485, RS-232 |
Backup Memory | 1747-M13 |
Ambient Temperature | 0 to 60 degrees Celsius |
Backplane Current (5 Volts DC) | 500 milliamps |
Battery back-up memory: | Yes; 1747-BA |
UPC | 10662072666279 |
About 1747-L531
The AB 1747-L531 is an SLC 5/03 processor type module that belongs
to the SLC 500 Modular Hardware Style series. It is built to
perform a large variety of functions, including small, simple
stand-alone systems to large, complex distributed ones. Designed to
perform throughput, it can support 60 various I/O modules including
analog, digital, and intelligent I/O’s and can, in addition,
control up to 4,096 output and input points. It ships with the SLC
500 modular processor, a compatible chassis, power supplies, and
installation instructions for all the included parts. This module
is C-Tick marked, CE compliant, and UL listed to Canadian and US
Safety Standards,
The 1747-L531 Modular Processor comes with a memory size of 8 K, 16
K, or 32 K for its programs. This user-configurable memory can be
applied either to program storage or to data storage. The drive
features a battery-backed RAM that lasts approximately 2 years. The
BATT LED indicator alerts user when the voltage of the replaceable
battery has fallen below the threshold level. A minimum of thirty
(30) minutes of power is available when the battery is
disconnected, due to an integrated capacitor. If a new battery is
installed to replace the old one within half an hour (30 minutes),
any data stored in the RAM can be retained. The 1747-L531 Processor
receives and initiates communication protocols including DH-485
peer-to-peer, ControlNet, Ethernet, Data Highway Plus (DH+),
DeviceNet, Modbus RTU Master, as well as full-duplex or half-duplex
master or slave DF1, ASCII and DH-485 via the RS232 port. Its front
panel has a 3-position key switch that allows three operation
modes: PROGRAM, RUN, and REMOTE. This key switch cannot be used in
place of an emergency-stop switch or a hardwired master control
relay.
This controller has an integrated 8K memory, which can be expanded
with the use of a Flash EPROM. The required memory module has part
number of 1747-M13 and adapter socket of 1747-M15 that supports up
to 64K of user memory. User program can be stored or burned to the
memory module to prevent accidental or unwanted program deletion
that may be caused by improper programming, electrical surges and
noises. The general rule when burning user program to the memory
module is that the program size must not exceed the processor
memory size. Do not burn a faulted program, especially a program
with a major fault. This will include the fault condition and cause
of the fault to be burned in the EPROM.
All SLC processors are configurable using RSLogix 500 Programming
software. This software is a ladder programming software. User
programs, hardware configuration are implemented here as well as
commissioning and troubleshooting tool are available such as I/O
forcing. The integrated RSLinx communication setup tool is RSLogix
500’s communication driver for various AB products, to establish
communication to and from the controller.
This processor also supports hold-up time feature. This refers to
the processor’s ability to continue programming scanning for a
limited time even if the input voltage to the system power supply
falls below the nominal range. When the hold-up time expire, the
CPU is automatically put to stop mode. This prevents sudden
stoppage that is not ideal in any control application.