171CCS76000 SQUARE D, 171CCS76000 Datasheet - Page 9

• Manufacturer Part Number: 171CCS76000
• Description: Programmable Logic Controller
• Manufacturer: SQUARE D

Specifications of 171CCS76000

• Peak Reflow Compatible (260 C): No
• Leaded Process Compatible: No
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

3/00
Compact Controller and I/O
For Selection and Pricing refer to Programmable Controller document no. 8000PL9602R11/99.
The Compact controllers use Flash Memory for their operating system and command set
storage. This nonvolatile memory allows cost and time saving upgrades on site: instead
of replacing EEPROMs or memory assemblies, only one file needs to be loaded into the
central processing unit (CPU).
For both decentralized data transfer and programming, every CPU is equipped with at
least two Modbus communications interfaces. The larger CPUs also have one Modbus
Plus interface. These interfaces are easily accessible at the module's front panel. Two
rotary switches are located on the front for models with Modbus Plus. These switches are
used to set the addresses of the Modbus interfaces.
The CPU stores the application program in battery-backed RAM. The battery is located
on the front of the module and can be replaced without loss of data during operation.
Storing the user program in flash ROM secures data even during operation without a
battery.
Two slide switches provide simplified user control of key functions. The memory
protection switch prevents programming devices or other input devices from overwriting
the user program. The Modbus interface switch sets the Modbus data transfer parameters
as either ASCII, RTU, or any other protocol that can be set manually.
LEDs provide information on the operating status of the CPU: startup diagnostics
(READY); when the program is being executed (RUN); active status of the Modbus
interfaces (MODBUS); and when the battery must be replaced (BAT LOW).
The PCMCIA cards - available in the 275 and 285 series CPUs - provide another
programming interface or memory expansion possibility.
Every central processing unit has a real-time clock that provides both the date and the
time.
The 258C/R central processing units conform to Railroad Standard EN 50 155. They
have an expanded temperature range, flash ROM for the user program on the CPU (no
battery required), and yellow LEDs.
All controllers are available with optional conformal protective coating on the electronic
components.
8 K user logic, 2 Modbus ports
8 K user logic, 1 Modbus, 1 Modbus Plus ports
16 K user logic, 2 Modbus ports
16 K user logic, 1 Modbus, 1 Modbus Plus ports
512 K RAM, 2 Modbus ports
Conformal coating. Conforms to Railroad Standard EN 50 155.
512 K RAM, 2 Modbus ports
512 K RAM, 2 Modbus ports
Conformal coating. Conforms to Railroad Standard EN 50 155.
512 K RAM, 1 Modbus Plus, 2 Modbus ports
512 K RAM, 1 Modbus Plus, 2 Modbus ports
Conformal coating
512 K RAM, 1 Modbus Plus, 2 Modbus ports
PCMCIA II slot
512 K RAM, 1 Modbus Plus, 2 Modbus ports
PCMCIA II slot,
Conformal coating
1 MB RAM, 1 Modbus Plus, 2 Modbus ports
PCMCIA II slot
1 MB RAM, 1 Modbus Plus, 2 Modbus ports
PCMCIA II slot,
Conformal coating
Description
Compact Automation Platform
Overview and Description
Catalog Number
PCE984241
PCE984245
PCE984251
PCE984255
PCE984258R
PCE984258
PCE984258C
PCE984265
PCE984265C
PCE984275
PCE984275C
PCE984285
PCE984285C
All Rights Reserved
© 2000 Square D
Weight
grams
CPUs
540
540
540
540
550
550
550
540
540
580
580
580
580
25-9