Omron EJ1 - 07-2008, Operation Manual

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Sending CompoWay/F Commands to a Temperature Controller Section 6-2
4. Click the General Tab in the Edit Device Parameters Window, and then
click the Download Button. The parameters will be downloaded and the
value for the message monitor timer of the DeviceNet Communications
Unit will be changed.
C2000HE/HG/HX, CVM1, or CV-series DeviceNet Master Unit
Set the response monitoring time to 5,000 ms when sending the explicit mes-
sage using an IOWR instruction. (The message timer cannot be set from the
Configurator.)
6-2 Sending CompoWay/F Commands to a Temperature
Controller
The master can send CompoWay/F command frames to the DeviceNet Com-
munications Unit by embedding them in explicit message commands, and
receive CompoWay/F response frames that are embedded in explicit mes-
sages responses.
When the DeviceNet Communications Unit receives the explicit message
command, a CompoWay/F command frame is created by adding STX, ETX,
and BCC to the command frame data, from the communications unit number
to the FINS-mini command text, after which it is sent to the Temperature Con-
troller. The Temperature Controller returns a CompoWay/F response.
When the DeviceNet Communications Unit receives the CompoWay/F
response returned from the Temperature Controller, the STX, ETX, and BCC
values are deleted, and then the data is converted to an explicit message
response in either hexadecimal or ASCII format, before it is sent to the mas-
ter. (The DeviceNet Communications Unit performs a BCC check.)