3. RKC COMMUNICATION PROTOCOL
IMR02F04-E1
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3.2 Selecting
Selecting is the action where the host computer requests one of the connected PG500s to receive data. An
example of the selecting procedure is shown below:
3.2.1 Selecting procedures
(1) Data link initialization
Host computer sends EOT to the PG500s to initiate data link before selecting sequence.
(2) Sending selecting address from the host computer
Host computer sends selecting address for the selecting sequence.
Address (2 digits)
This data is a device address of the PG500 to be selected and must be the same as the device
address set value in item
2.3 Setting
(P. 10)
.
As long as the data link is not initialized by sending or receiving EOT, the selecting
address once sent becomes valid.
PG500 send
Host computer send
Host computer
send
(1)
(2)
(5)
(3)
(4)
(6)
[Address]
E
O
T
E
O
T
[Identifier] [Data]
[BCC]
E
T
X
S
T
X
A
C
K
N
A
K
(7)
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