Rockwell Automation 1771-DA,D17716.5.13 U MNL 1771-DA ASCII I/O MODULE - Manual (Page 153)

Function of Control/Status Bits
Chapter 6
6Ć18
Figure 5.3
Status Word One, SW1
17 16 15 14 13 12 11 10 07 06 05 04 03 02 01 00
Chan Ć
nel
Active
Write
Data
AckĆ
nowĆ
ledge
Read
Data
AvailĆ
able
Input
String
>
MaxiĆ
mum
ASCII
DeĆ
vice
Link
Error
IniĆ
tialiĆ
zation
Error
0 Data
ComĆ
plete
Power
Up
IniĆ
tialiĆ
zation
0 Output
Buffer
Input
Buffer
1 =
Full
1 =
Empty
1 =
Full
1 =
75%
Full
1 =
50%
Full
1 =
Empty
Figure 5.4
Status Word Two, SW2
17 16 15 14 13 12 11 10 07 06 05 04 03 02 01 00
Number of Strings per Block Transfer
00Ć62
Number of Data Words per String
00Ć62
BCD Digit 1 BCD Digit 0 BCD Digit 1 BCD Digit 0