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9
.
Program
35
9.1.1. Outline of Processing
The following figure shows the data flow from when the Controller (SCU) sends CompoWay/F
command to the Destination Device until the Controller receives response data from the
Destination Device.
(1)The ST program executes the send command instruction (SendCmd instruction) for which
CompoWay/F is specified.
(2)The Controller sends command data of "Read Controller Attributes" to the Digital
Temperature Controller using communications via CompoWay/F.
(3)The Digital Temperature Controller executes the command by receiving the command data
from the Controller, and returns response data to the Controller.
(4)The Controller receives the response data from the Digital Temperature Controller and
stores in the specified variable.
Controller
RS-485
Digital Temperature
Controller
CPU Unit
SCU
ST program
IF …. THEN
……….
ELSE
……….
End_IF
SendCmd(…
Local_cmddata
Command data
setting area
Serial Gateway
function
(1) Executes the send command
instruction.
(SendCmd instruction)
(Specifying CompoWay/F)
Command data
Response data
Local_recvdata
Response data
storage area
(2) Sends command data.
(Communications via
CompoWay/F)
(3) Executes the
command
and returns
response data.
(4) Receives the response data
and stores it at the specified
variable in the memory.
Содержание E5*D series
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