Install optional memory module – Rockwell Automation 1771-DB BASIC MODULE User Manual

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Chapter
Installing and Replacing Components

3

3 -4

The BASIC module supports these Allen-Bradley Memory Modules:

8K EEPROM (Cat. Nos. 1771-DBMEM1 or 1747-M1)
32K EEPROM (Cat. Nos. 1771-DBMEM2 or 1747-M2)
8K EPROM (Cat. No. 1747-M3)
32K EPROM (Cat. No. 1747-M4, PN 940654-02, or PN 940654-03)

Also, you can use any JEDEC standard 8K, 16K, or 32K EPROM or 8K
or 32K EEPROM with speeds faster than 150 ns (for example 90 ns).
When using turbo mode, the memory modules must have speeds of 90 ns
or faster (for example 50 ns).

You can store up to 255 programs in memory modules. The programs are
stored in sequence in the PROM for retrieval and execution. The BASIC
module generates all of the timing signals needed to program most
EEPROM optional memory modules. However, EPROM optional
memory modules must be programmed by an external PROM programmer.
Jumper JW2 is used to redirect the module circuitry for the different
memory module options (see Chapter 1). These commands allow you to
generate and manipulate the PROM file: RAM, ROM, XFER, PROG,
PROG1, PROG2 (Chapter 10).

The data format of the BASIC module EEPROM and EPROM optional
memory modules is hexadecimal. PBASE software provides a hex file
transfer option that can be used to upload and download hex files to the
BASIC module EEPROM or EPROM. The primary use of hex file
transfers is to transfer the data from an EEPROM in one BASIC module to
an EEPROM in another BASIC module. Hex file transfers can also be
used to copy the data of an EEPROM to a EPROM via a PROM
programmer.

Refer to the BASIC Development Software Programming Manual
(publication number 1746-6.2) for additional information on hex file
transfers.

Important: The BASIC module can program and erase EEPROM memory
modules. However, it cannot program or erase EPROM memory modules.

Install Optional Memory
Module

Chapter

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