AMCI 7500 Series 빠른 시작 매뉴얼 - 페이지 11
{카테고리_이름} AMCI 7500 Series에 대한 빠른 시작 매뉴얼을 온라인으로 검색하거나 PDF를 다운로드하세요. AMCI 7500 Series 11 페이지. Intelligent ldt interface module
페이지 인쇄
Programming Example
The three rung ladder logic program below can be, but does not have to be, used to program a 7500
module. This example assumes the module is located in slot 1 of the SLC rack and uses the following
addresses.
N7:0/0
Manually set to initiate data transfer to the 7500 module.
N7:10 - N7:17 Holds data written to the 7500 module at output words O:1.0 - O:1:7.
I:1.0/15
7500 ACKnowledge bit.
O:1.0/15
7500 Transmit bit.
Manually set bit N7:0/0 to initiate the transfer of data to the 7500 module. Note that the data in
N7:10 does not have transmit bit O:1/15 set. This rung is performed until acknowledge bit I:1/15 is
set.
Set to write to
7500 module
N7:0
0
When bit N7:0/0 has been manually set, this rung sets transmit bit O:1/15, which tells the 7500
module to act on the data located in the output image table. This rung is true as long as bit N7:0/0 is
set, and the module has not responded by setting acknowledge bit I:1.0/15.
Set to write to
7500
7500 Module
ACK bit
N7:0
0
The following rung unlatches bit N7:0/0 when the 7500 module has set acknowledge bit I:1/15 in
response to the transmit bit being set in rung two. The Programming cycle is now complete.
Set to write to
7500
7500 module
ACK bit
N7:0
0
Document Number: 940-55010
7500
ACK bit
I:1
15
I:1
15
I:1
15
COP
COPY FILE
Source: #N7:10
Dest:
#O:1.0
Length: 8
7500 Transmit
Bit
O:1
(
)
15
Set to write to
7500 Module
N7:0
( U )
0