Alternate Mode (One Channel At A Time) Input File - Rockwell Automation Allen-Bradley 1769-ASCII User Manual

Alternate Mode (one channel
at a time) Input File
Table 6 - Alternate Mode (one channel at a time) Input File Tags
15 14 13 12 11 10
Generic Module Tag Names
0 Tx ID 0 Acknowledged
1
2 Tx ID 1 Acknowledged
3 15 14 13 12 11 10 TG1 TS1 ND1 HE1 NR1 RF1 TF1 PA1 RO1 TO1 Local:S:I.Ch1Status
4
5
Firmware Revision, Major
6
7
8 Character 1
9 Character 3
... Character ...
106 Character 197
107 Character 199
(1) Tag name format is `Local:S:I' where `S' represents slot number.
(2) Reserved is expected in 1st instance word 0.
One channel's data is received and stored in the input file at a time. The Channel
Number (CN) bit defines the channel whose data is returned. The alternate
mode input file contains the real-time input data from the module with a header
and data section for each channel. This table illustrates the maximum size
allowed.
Bit Position
9 8 7 6 5 4
Rx Transaction ID Ch0
(2)
Reserved
Rx Transaction ID Ch1
Reserved
Reserved
Firmware Revision, Minor
Length (Number of Bytes)
Reserved
Character 0
Character 2
Character ...
Character 196
Character 198
Rockwell Automation Publication 1769-UM012B-EN-P - January 2014
Add-On-Profile Tag
3 2 1 0
Name
Local:S:I.Ch0TxIACK
Local:S:I.Ch0RxID
Local:S:I.Ch0Status
Local:S:I.Ch0TxAck
Local:S:I.Ch0RxID
CNI Local:S:I.RxChNumber
CNO Local:S:I.TxChNumber
Local:S:I.RxDataLength
Local:S:I.RxData
Local:S:I.RxData
Local:S:I.RxData
Local:S:I.RxData
Local:S:I.RxData
I/O Memory Mapping
Description
(1)
Receive Transaction ID Request. Used with Ch0RxID
for handshake mode.
Ch0 Status. See Status Descriptions on page
Receive Transaction ID Request. Used with Ch1RxID
for handshake mode.
Ch1 Status. See Status Descriptions on page
Channel number of the input data. This bit is set by
the 1769-ASCII module to tell the user program
from which port the data was received.
Channel number of the output data most recently
received. This bit is set by the ASCII module to tell
the user program that it has received the data to
transmit out the specified port.
The amount of data being received.
This defines the receive ASCII character for the tag.
Chapter 3
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