Compact 1769-ASCII Module
21
Publication
1769-IN068B-EN-P - May 2005
Simultaneous Mode (Two Channels) Output File
Maximum size is shown below. Refer to the Compact I/O 1769-ASCII
Module User Manual, publication 1769-UM012, to use smaller output files.
•
Tx = Transmit
•
Rx = Receive
Wo
rd
Bit Position
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Channel 0 Data
0
Reserved
Tx Transaction ID
1
Reserved
Rx Transaction ID Request
2
Reserved
3
Length (Number of Bytes)
4
Character 1
Character 0
5
Character 3
Character 2
…
Character …
Character …
x
(1)
(1)
X is calculated based on the size of Channel 0 data as specified in the configuration file. Both
channels cannot contain 200 characters as the total configuration file size can be only 108 words.
Last Character
Character …
Channel 1 Data
x+1
Reserved
Tx Transaction ID
x+2
Reserved
Rx Transaction ID Request
x+3
Reserved
x+4
Length (Number of Bytes)
x+5
Character 1
Character 0
x+6
Character 3
Character 2
…
Character …
Character …
y
(2)
(2)
Y is equal to the connection size minus 1, with a maximum value of 107 for a buffer size of 108.
Last Character
Character …