RKC INSTRUMENT CD101 - Selecting; Selecting Procedure

4. COMMUNICATION PROTOCOL
IMCD06-E2
24
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4.2 Selecting
Selecting is an operation in which the host computer selects one from among the controllers multidrop
connected and then of recommending data receive. The procedure is as the following.
Due to adopted fast selecting in controllers therefore becomes the type to send the data which
connected to selecting sequence.
4.2.1 Selecting procedure
(1) Initialize of data link
Host computer sends [EOT] for initializing of data link before selecting sequence.
(2) Selecting address send
Send the selecting address selected as the selecting sequence from the host computer.
[Device address] (Number of digits : 2)
This data is a device address of the controller to be selected and must be the same as the device
address set value in item "3.3 Device address setting" (P. 7).
[ Identifier ]
Controller send
Host
computer
send
Host com
p
uter send
[ Data ]
[ BCC ]
(1)
(2)
(5)
(3)
(4)
(6)
[
Address
]
No res
p
onse
E
O
T
S
T
X
A
C
K
N
A
K
E
T
X
(7)
E
O
T