Installation manual

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1
Memory structure (continued)
Modicon TSX Micro
automation platform 1
TSX 37 05/08/10/21/22 PLCs
The application memory is divided into memory zones, which are physically shared
between the internal RAM memory and the PCMCIA memory card (if the TSX 37 21/
22 PLC has a memory card):
b The application data zone which is always is the internal RAM memory.
b The application program zone in the internal RAM memory or on the PCMCIA
memory card.
b The constants zone in the internal RAM memory or on the PCMCIA memory card.
b The Flash EPROM zone for the application program backup, the constants and
1 K internal words.
b The file storage zone in the PCMCIA memory card.
If the content of the RAM memory is lost (battery fault or no battery) then the content
of the Flash EPROM memory (program, constants and 1 K internal words) is
automatically transferred to the internal RAM memory. The backup copy of the
application in the Flash EPROM memory requires that the PLC does not have a
PCMCIA memory extension card and that the size of the program and the constants
does not exceed 16 Kwords.
Two types of application memory organization are possible for TSX Micro PLCs
depending on whether the PLC is equipped with a memory extension in the form of a
PCMCIA card:
Application in the internal RAM
The application is loaded entirely in the battery-backed internal RAM of the processor
with a capacity of:
b 11 Kwords for TSX 37 05/08, shared, for example: as 3 Kwords of application data
and 8 Kwords of the program and its constants.
b 14 Kwords for TSX 37 10, shared, for example: as 500 words of application data
and 13.5 Kwords of the program and its constants.
b 20 Kwords for TSX 37 21/22, shared, for example: as 4 Kwords of application data
and 16 Kwords of the program and its constants.
Application in the internal Flash EPROM
The total volume is equal to the application volume in RAM, limited to 11 Kwords
or 15 Kwords, to which the backup of the first 1024 data words (%MW) is added.
Application in the PCMCIA card
The PCMCIA memory card contains the program and the constants.
The additional data storage zone for 128 Kword data (available according to the
PCMCIA card model) can be used for distributed applications, for storing information
which can be consulted remotely via Modem.
This zone can also be used for storing manufacturing recipes.
Internal RAM data
The data zone can be extended to 20 Kwords, and is only held in the PLC
internal RAM.
Data backup
The first 1024 words are backed up by the PLC internal Flash EPROM memory.
PL7 Micro/Junior/Pro software aids the application designer in the management
of the structure and the occupation of memory space for TSX Micro PLCs.
Whatever the PLC's memory structure is: application in internal RAM or on the
PCMCIA card, it is possible to protect the structure to prohibit access (reading or
program modification) in online mode using PL7 Micro/Junior/Pro software.
Micro TSX 37 21/22 PLCs make it possible to save the 32 Kwords maximum
application (programs and constants) on a Backup TSX MFP BAK 032P memory
card. The internal RAM memory can thus be reloaded with the contents of this
Backup memory card.
This Backup function is not available if the application runs on a PCMCIA RAM or
Flash EPROM memory card.
Application memory
TSX 37 05/08/10/21/22 (without PCMCIA card)
1 Application data (17.5 Kwords maximum).
2 Descriptor and exedutable code for tasks.
3 Constant words, initial values and configuration.
Internal
RAM
Flash
EPROM
11/14/20 Kwords
12/16 Kwords
Backup copy
Data
Program
Constants
Program and constants
1 Kwords int. %MW
T
SX 37 21/22 (with a PCMCIA card)
1
Application data (17.5 Kwords maximum).
2
Descriptor and exedutable code for tasks.
3
Constant words, initial values and configuration.
4
According to the PCMCIA card model.
Internal
RAM
Flash
EPROM
20
Kwords
Data
1 Kwords int. %MW
Program
Constants
Additional data storage
Backup copy
PCMCIA
card
16
Kwords
32/64/128
Kwords
128
Kwords
Application protection
Backup application
F
unctions:
p
ages 1/8 and 1/9
Characteristics:
pages 1/13 and 1/14
References:
pages 1/15 and 1/16
Dimensions, mounting:
page 1/17
Courtesy of Steven Engineering, Inc. ● 230 Ryan Way, South San Francisco, CA 94080-6370 ● General Inquiries: [phone] ● www.stevenengineering.com
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