Omron CPM2C-S100C Operation Manual page 153

Explicit Message Communications
C200HX/HG/HE PCs: Reading Data with IOWR(––)
Example Network
Conditions
IOWR(––) Operand Details
[IOWR C S D]
This example shows the instruction operands and results when 20 words of
data (IR 010 to IR029) in a Slave are read through a Master mounted in a
C200HX/HG/HE PC and stored in words DM 2000 to DM 2019.
Refer to the DeviceNet Masters Operation Manual (W379) for details on
explicit messages and refer to the C200HX/HG/HE Programmable Controllers
Operation Manual (W303) for details on IOWR(––).
The Master's node number is 63, the Slave's network address is 0, and the
Slave's node number is 2.
• Control Code
Word Contents
(Hex)
C 3F FE Master's node number = 3F (Hex) specifies 63
Master's unit address = FE (Hex) specifies the local Unit
• Command Words (Source information)
Word Contents
(Hex)
S 82 07 Specifies starting response word = DM 2000
82 (Hex) specifies the DM area
S+1 D0 00
07D0 (Hex) specifies address 2000
(Refer to the C200HX/HG/HE Operation Manual (W303) for
details.)
S+2 00 64 Response monitoring time = 64 (Hex) specifies 10.0 seconds
S+3 00 0B Number of bytes of command data beginning with word S+4 =
0B (Hex) specifies 11 bytes
S+4 28 01 EXPLICIT MESSAGE SEND command code = 2801 (Hex)
S+5 02 1C Slave node number = 02 (Hex)
READ BYTE DATA command service code = 1C (Hex)
S+6 00 2F Class ID = 002F (Hex)
S+7 00 01 Instance ID = 0001 (Hex) specifies data area
S+8 0A 00 Starting read address = 000A (Hex) specifies IR 010
Address L = 0A (Hex); Address H = 00 (Hex)
S+9 28 00 Number of bytes = 28 (Hex) specifies 40 bytes
(The rightmost byte of S+5 is not used.)
• Destination Information
Word Contents
(Hex)
D 00 10 Master Unit's unit number = 00
Number of words of command data beginning with word S = 10
(BCD) specifies 10 words
• Response Words (The results are stored as follows.)
Word Contents
(Hex)
DM 2000 28 01 EXPLICIT MESSAGE SEND command code = 2801 (Hex)
DM 2001 00 00 Normal completion code = 0000 (Hex)
DM 2002 00 2A Number of bytes received = 2A (Hex) indicates 42 bytes
(This is the number of bytes from D+3 to the end.)
DM 2003 02 9C Slave's node number = 02 (Hex)
READ BYTE DATA response service code = 9C (Hex)
DM 2004 HH LL These words contain the data read from slave words IR 010
to IR 029. When the READ BYTE DATA command is exe-
to :
cuted from an OMRON Master, the bytes are stored in the
DM 2023 HH LL
same order (HH LL) in which they were stored in the Slave.
Section 6-3
Function
Function
Function
Function
131