Omron CP - PROGRAMMING MANUAL 05-2007 - Echrd

903
Network Instructions Section 3-24
3-24-9 EXPLICIT WORD READ: ECHRD(723)
Purpose Reads data to the local CPU Unit from another CPU Unit in the network.
This instruction can be used in the CP1H CPU Units only. It cannot be used in
the CP1L CPU Units. If ECHRD(723) is used in a CP1L CPU Unit, Error Flag
(ER) will be turned ON.
Ladder Symbol
Variations
10 08 02 68 F4 01 00 00
CP1H
Attribute ID
Service Data:01F4He
x
Instance ID
Class ID
Service Code
Explicit message command format
Destination node address
CS1W-DRM21 DeviceNet Unit
(CPU Bus Unit with unit number 2)
Unit address 12 hex (because
the unit number is 2)
Slave (I/O Terminal)
with node address 10
Explicit
message
ESATR(722)
instruction
SD0000C
S:+1 D1 0 0 0 A
S+2: D2 0 0 0 8
S+3: D3 0 0 0 2
S+4: D4 0 0 6 8
S+5: D5 0 1 F 4
S+6: D6 0 0 0 0
C: D201 8 6 1 2
C+1: D202 0 0 0 0
C+2: D203 0 0 0 0
Number of bytes of data: S+1 to S+6 = 6 words = 12 bytes = 0C hex
Slave’s node address = 10 = 0A hex
Class ID = 08 hex
Instance ID = 02 hex
Attribute ID = 68 hex
Service Data = F401 hex
Byte order = 8 hex (from rightmost byte), communications port = 6
hex (port 6), and the DeviceNet Unit’s unit address = 12 hex
Response monitoring time = 0000 hex (2 s)
Explicit format type = 0000 hex (DeviceNet format)
ECHRD(723)
S
D
C
S: First source word in remote CPU Unit
D: First destination word in local CP1H CPU Unit
C: First control word
Variations Executed Each Cycle for ON Condition ECHRD(723)
Executed Once for Upward Differentiation @ECHRD(723)
Executed Once for Downward Differentiation Not supported
Immediate Refreshing Specification Not supported