Omron CP - PROGRAMMING MANUAL 05-2007 - Page 922

889
Network Instructions Section 3-24
• Storing Data from the Rightmost Byte (Bits 12 to 15 of C = 8 hex)
Example: Storing the value 1234 hex in D+3
2. Data in 4-byte Units
• Storing Data from the Leftmost Byte (Bits 12 to 15 of C = 0 hex)
Example: Storing the value 12345678 hex in D+3 and D+4
• Storing Data from the Rightmost Byte (Bits 12 to 15 of C = 8 hex)
Example: Storing the value 12345678 hex in D+3 and D+4
Note The examples above only show the storage of received data in D+3, but send
data is stored in S+6 in the same way.
Example In this example, EXPLT(720) is used to read the total ON time or number of
contact operations from a DRT2 Slave (I/O Terminal).
When CIO 0.00 and A202.06 (the Communications Port Enabled Flag for port
06) are ON, EXPLT(720) reads the Total ON Time (s) or Number of Contact
Operations from a DRT2 Slave (I/O Terminal). In this case, the Total ON Time
or Number of Contact Operations for input 3 are read.
Service Code = 0E hex, Class ID = 09 hex, Instance ID = 03 hex, and Attribute
ID = 66 hex.
For example, a value of 2,752,039 s is returned as the response for the Total
ON Time.
34
15
D+3
08 07
00
12
12 34
Frame
The data in the frame is in the order 34 → 12.
In this case, 1234 hex is
stored from the
rightmost byte in the
order 34 → 12.
78
15
78 5D+3
D+4
6
34 12
08 07
00
56 34 12
Frame
The data in the frame is in the order 78 → 56 → 34 → 12.
In this case, 12345678 hex is
stored from the leftmost byte in
the order 78 → 56 → 34 → 12.
78
15
D+3
D+4
12 34
08 07
00
56 34 12
56 78
Frame
The data in the frame is in the order 78 → 56 → 34 → 12.
In this case, 12345678 hex is
stored from the rightmost byte in
the order 78 → 56 → 34 → 12.
0.00
A202.06
S
D
C
EXPLT
D000
D100
D200
Communications Port
Enabled Flag (Port 6)