Data Formats; Block Transfer Write Format From Plc To Qrd; Response From Qrd To Plc Block Transfer - Allen-Bradley 1771-QRD Installation And User Manual

Block Transfer Write Format
From PLC to QRD
b7 b6
RESET RESET
CH 4 CH 3
Overflow Flag Overflow Flag
Response from QRD to PLC
Block Transfer
first second
word word
RESPONSE CODE CH 1
AND ERROR RATE
CODE (1XYZ)
Artisan Scientific - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisan-scientific.com

Data Formats

Use this block format to reset totalizer(s) and/or overflow flag(s).
Note: b8 through b15 are unused.
b5 b4
RESET RESET
CH 2 CH 1
Overflow Flag Overflow Flag
Where: "1"=reset
"0" = not reset
third fourth fifth
word word word
CH 1 CH 2 CH 3
TOTAL RATE TOTAL
Notes:
The digit in the response/error code labeled "Z" will adhere to the
following definitions:
Code Meaning
0 Valid data
1 Channel pair default
2 BLOCK TRANSFER syntax error
3 Channel pair fault and syntax error
Appendix A
b3 b2
RESET RESET
CH4 CH3
TOTAL TOTAL
sixth seventh
word word
CH 3 CH 4
RATE TOTAL
b1 b0
RESET RESET
CH2 CH1
TOTAL TOTAL
eighth ninth
word word
CH 4 CH 4
RATE TOTAL
A–1