User`s manual

Western Reserve Controls, Inc. 1782-JDC User’s Manual
16
A.2 Serial I/O Object Polled Data Formats
Table A-2 Poll Produce Data (ASCII Receive String)
Byte Characte
r
Description
0 Record # Record Counter, Integer value 1 – 255
0 = Initialized State (counter value rolls over from 255 to 1, skipping 0)
1 Status Status / Error Value
2 1
st
Char ASCII Character
3 2
nd
Char ASCII Character
•
•
•
X Last Char ASCII Character
X+1
EOF A
End-of-Text (Record) Character
•
•
Max Rec
Char + 1
Any Undefined (present if characters received is less than Max Receive Chars value)
Table A-3 Poll Consume Data (ASCII Transmit String)
Byte Characte
r
Description
0 Record #,
Port A
Record Counter, Integer value 1 – 255
0 = Initialized State (counter value rolls over from 255 to 1, skipping 0)
1 1
st
Char ASCII Character
2 2
nd
Char ASCII Character
3 3
rd
Char ASCII Character
•
•
•
X Last Char ASCII Character
x + 1
EOF A
End-of-File (Record) Character
•
•
Max Tx
Length –
1
Any Undefined
Max Tx
Length
Any Undefined
(last char in this record transmitted to Master)
A.2.1 Attributes and Services
Following are the Class Attributes, Instance Attributes and Services are supported by the
JDXX for the Serial I/O Point Object.