Omron CP - PROGRAMMING MANUAL 05-2007 - Page 935

902
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 S+5
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 S+5 and S+6
• Storing Data from the Rightmost Byte (Bits 12 to 15 of C = 8 hex)
Example: Storing the value 12345678 hex in S+5 and S+6
Example In this example, ESATR(722) is used to overwrite the Number of Contact
Operations set value in 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) writes the Number of Contact Operations set value
for input 2 in a DRT2 Slave (I/O Terminal).
(Service Code = 10 hex,) Class ID = 08 hex, Instance ID = 02 hex, and
Attribute ID = 68 hex.
In this case, the Number of Contact Operations is being set to 500 (1F4 hex),
so the service data is set to 000001F4.
34
15
12 3S+5 4
08 07
00
12
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 5S+5
S+6
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
56 7S+5
S+6
8
12 34
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 rightmost byte in
the order 78 → 56 → 34 → 12.
0.00
A202.06
S
C
ESATR
D0
D201
Communications Port
Enabled Flag (Port 6)