18
Transmitting DeviceNet Explicit Messages
Section 4-1
4-1
Transmitting DeviceNet Explicit Messages
DeviceNet explicit messages are executed from the user program using the
CMND(194/490) instruction for a CVM1, CV
-
series, or CS1
-
series PC, and
the IOWR(223) instruction with a C200HX, C200HG, or C200HE PC.
The transmission procedure involves the Master sending a command to the
E5ZE and the E5ZE returning a response to the command back to the Master.
Refer to the DeviceNet (CompoBus/D) Operation Manual (Cat. No. W267) for
details on the transmission methods.
Details on the format of commands and responses used for transmission, and
the set values and measurement values specific to the E5ZE are provided
here.
4-1-1
Command Format
The command format for DeviceNet explicit messages is given below.
Command
Response
Master Unit
E5ZE
Command
Class ID
Command
Service code
Instance ID
Command
code
Parameter
Destination
node address
Response
Normal
Service code
Destination
node address
End code
Error
Destination
node address
Service code
DeviceNet
error code
Command
code
E5ZE fixed command (Refer to
4-2 E5ZE
Fixed Command Configuration
.)
E5ZE fixed response (Refer to
4-2 E5ZE
Fixed Command Configuration
.)