4. RKC STANDARD COMMUNICATION
IM9000F02-E2
24
d
d
d
d
Identifier [Number of digits: 2] (See P. 31.)
This is for identifying data (measured value, status and set value) sent to the host computer.
e
e
e
e
Data [Number of digits: 7]
Data indicated by the identifier belonging to the REX-F9000. It is expressed in decimal
ASCII code including a minus sing (-) and a decimal point. No zero suppression is made.
f
f
f
f
[ETX]
A transmission control character used to indicate text end.
g
g
g
g
[BCC]
BCC (Block Check Character) for error detection using horizontal parity. BCC is calculated
by horizontal parity (even number).
<Algorithm>
Take off exclusive "OR" of all character from next [STX] through [ETX].
Not including [STX].
Example:
In the case of the data are :
BCC
E
T
X
0
0
0
.
3
2
0
1
M
S
T
X
50H
31H
03H
30H
30H
30H
2EH
33H
32H
30H
4DH
In the parenthesis are
indicated with hexadecimal
number.
BCC = 4DH
31H
30H
32H
33H
2EH
30H
30H
30H
03H = 50H
Value of BCC becomes 50H
(4) REX-F9000 data send end (EOT send)
If the following cases, the REX-F9000 sends [EOT] to terminate the data link.
z
When there is no specified identifier.
z
When there is an error in the data
type.
z
After all the data has been sent.
(5) REX-F9000 no response
The REX-F9000 is set to no response when the polling sequence is not received correctly. If
necessary, take time out recovery etc. for the host computer.