Omron R88A-MCW151-DRT-E - Page 88

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DeviceNet (MCW151-DRT-E only) Section 4-2
Three-word format The data in the PC is represented by three memory elements, in total three
words. The following is the configuration of a BCD position data item.
Example 1: The three-word format of value 56143 is given by
Example 2: The three-word format of value -48.89 is given by
One data item uses three words. Therefore the total words for data transfers
should be the amount of data transferred multiplied by three.
4-2-2-1 Message Communications
When sending explicit messages from an OMRON Master Unit, use the
CMND or IOWR instruction to send the message data as an EXPLICIT MES-
SAGE SEND (28 01) FINS command.
Command Block
Response Block Normal Response
Note For a normal response, the leftmost bit of the service code specified in the
command will be turned ON and then returned. For example, a command
service code of 32 Hex is returned as B2 Hex in the response.
j+0 0 0 0 0
j+1 6 1 4 3
j+2 0 0 0 5
j+0 0 0 0 2
j+1 4 8 8 9
j+2 8 0 0 0
j+0 0 0 0 A
j+1
x10
3
x10
2
x10
1
x10
0
j+2
x10
7
x10
6
x10
5
x10
4
Decimal point A = 0 (Indicates 1)
1 (Indicates 0.1)
2 (Indicates 0.01)
3 (Indicates 0.001)
4 (Indicates 0.0001)
Position data
Sign bit (s)
0: positive
1: negative
3210bit
s
x10
7
28 01 32 00 8A 00 01 242 bytes max.
Destination node address
Service code
Instance IDCommand
code
Class ID
Service Data
28 01 00 00 240 bytes max.
Source node address
Command
code
Response
code
No.ofbytes
received
Service code
Service Data