Rockwell-automation 1771-IFE ANALOG INPUT MODULE Instrukcja Użytkownika Strona 73

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E–3Block Transfer (Mini-PLC-2 and PLC-2/20 Processors)
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The input module transfers a specific number of words in one block
length. The number of words transferred is determined by the block
length entered in the output image table control byte corresponding
to the module’s address.
The bits in the output image table control byte (bits 00 - 05) must be
programmed to specify a binary value equal to the number of words
to be transferred.
For example, Figure E.2 shows if your input module is set up to
transfer 6 words, you would set bits 01 and 02 of the lower image
table control byte. The binary equivalent of 6 words is 000110. You
would also set bit 07 when programming the module for block
transfer read operations. Bit 06 is used when block transfer write
operations are required.
Figure E.2 Setting Block Length (Multiple GET Instructions
only)
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Number of
Words to
Tf
Binary Bit Pattern
Lower Output Image Table Byte
Transfer
05
04 03 02 01 00
 !.&-
::
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
Setting the Block Length
(Multiple GET Instructions
only)
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