Explicit Word Write: Echwr(724) - Omron SYSMAC CJ - REFERENCE MANUAL 01-2008 Reference Manual

Network Instructions

3-25-10 EXPLICIT WORD WRITE: ECHWR(724)

Purpose
Ladder Symbol
Variations
Applicable Program Areas
Operands
1092
When CIO 000000 and A20206 (the Communications Port Enabled Flag for
port 06) are ON, ECHRD(723) reads D00000 to D00002 from the I/O memory
of the CJ-series CPU Unit with node address 07 on the DeviceNet Network
and stores the data in D00100 to D00102 of the local CPU Unit.
CS1W-DRM21 DeviceNet Unit
(CPU Bus Unit with unit number 2)
ECHRD(723)
CPU
instruction
Unit
Unit address 12 hex (because
the unit number is 2)
DeviceNet
Explicit
message
15
D: D00100
D+1: D00100
D+2:
15 8 7
C: D00200 0 0 0
C+1: D00201 0 0 0
C+2: D00202 0 6 1
C+3: D00203 0 0 0
C+4: D00204 0 0
0
Writes data from the local CPU Unit to another CPU Unit in the network. (The
remote CPU Unit must support explicit messages.)
This instruction is supported only by CS/CJ-series CPU Unit Ver. 2.0 or later.
ECHWR(724)
S
D
C
Variations Executed Each Cycle for ON Condition
Executed Once for Upward Differentiation
Executed Once for Downward Differentiation Not supported
Immediate Refreshing Specification
Block program areas
OK OK
S: First Source Word in Local CPU Unit
Specifies the leading word address in the local CPU Unit containing the write
data.
CJ1W-DRM21 DeviceNet Unit
CPU Unit
Node address 07
0
S: D00000
S+1: D00001
S+2: D00002
0
7
Node address of remote CPU Unit to be read = 07 hex (node 07)
3 Read data size (number of words) = 3 hex
Communications port = 6 hex (port 6),
2
and the DeviceNet Unit's unit address = 12 hex
Response monitoring time = 0000 hex (2 s)
0
Explicit format type = 0000 hex (DeviceNet format)
0
S: First source word in local CPU Unit
D: First destination word in remote CPU Unit
C: First control word
Step program areas Subroutines
OK
Section 3-25
15 0
ECHWR(724)
@ECHWR(724)
Not supported
Interrupt tasks
OK