Appendix Objectives; Supported Block Transfer Messages - Allen-Bradley 1203 Series User Manual

Appendix Objectives

Supported Block Transfer
Messages
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Supported Block Transfer
Messages
Appendix B provides information about the Block Transfer messages
supported by the Remote I/O communications module. In this
appendix, you will read about the following:
• Block transfer status word.
• Setting up data files for block transfer messages.
• Examples of block transfer messages.
• Block transfer quick reference.
Important: This appendix provides detailed examples of block transfer
messages. For information about block transfer messages,
also refer to Chapter 5.
ATTENTION: Hazard of equipment damage exists. If
!
block transfer messages are programmed to frequently
write parameter data, the EEPROM (Non-Volatile Stor-
age) will quickly exceed its life cycle and cause the prod-
uct to malfunction. Do not create a program that fre-
quently uses block transfer messages to write parameter
data to a product. Datalinks do not write to the EEPROM
and should be used for frequently changed parameters.
The following table lists the examples of block transfer messages in
this chapter.
Command
➀
Parameter Value Read
➀
Parameter Value Write
➀
Parameter Read Full
➀
Product ID Number Read
➀
Scattered Parameter Value Read
➀
Scattered Parameter Value Write
➀This function can be accessed in the module and product. The following examples describe
how to access it in the product. To do so in the module, add 16384 to the decimal value of
header word 2.
➁ These block transfer messages can be used for both faults and warnings. See details on
the referenced page.
Refer to the quick reference on page B-22 for a complete list of block
transfer messages.
Appendix
Page Command
B-3 Continuous Parameter Value Read
➀
B-4 Save/Recall/Initialize
➀ ➁
B-5 Fault Command Write
B-8 Fault Queue Entry Read Full
➀
B-10 Fault Queue Size Read
➀
B-12 Trip Fault Queue Number
B
Page
➀
B-14
B-16
B-17
➀➁
B-18
B-20
B-21