10
Remote I/O Installation and Programming Manual
2.6
Allen-Bradley Serial Stream
Figure 2-9 shows the format of the Allen-Bradley serial stream format. This format is output from the indicator
when the EDP port AB-RIO and STREAM parameters are set ON.
Figure 2-9. Allen-Bradley Serial Stream (ABSTRM) Format
2.7
Decimal Point Handling
Discrete Transfer
Discrete transfer commands return no decimal point information to the PLC. For example, a value of 750.1
displayed on the indicator is returned to the PLC as 7501.
Block Transfer
Block transfer commands support decimal point information with no special handling.
Polarity:
<Space> = Positive
<–> = Negative
Weight data:
7 digits, right-justified, with
decimal point, leading zero suppression
Termination character:
<CR> <LF>
ASCII 0D, 0A (hex)
<TERM>
<POL> <
wwwwwww
> <S1>
<S2>
Status Byte 1:
0100 1
xxx
Motion
0100
x
1
xx
Secondary units
0100
xx
1
x
Tare in system
0100
xxx
1
Net mode
Status Byte 2:
0100 1
xxx
Reserved
0100
x
1
xx
Keyed tare
0100
xx
1
x
Center of zero
0100
xxx
1
Overload/underrange
DISCONTINUED
