Omron CJ - INSTRUCTIONS REFERENCE MANUAL 07-2009 Reference Manual page 967

Programmable controllers

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3. Instructions

• ECHWR(724) sends an explicit message with the Service Code 1E hex (Byte Data Write).

Sample program

In this example, ECHWR(724) is used to write data from the I/O memory of the local CPU Unit to the

I/O memory of a CJ-series CPU Unit on the DeviceNet network.

Communications

Port Enabled Flag (Port 6)

CS1W-DRM21 DeviceNet Unit

(CPU Bus Unit with unit number 2)

Unit address 12 hex (because

the unit number is 2)

CJ1W-DRM21 DeviceNet Unit

When CIO 0.00 and A202.06 (the Communications Port

Enabled Flag for port 06) are ON, ECHWR(724) reads

D0 to D2 from the I/O memory of the local CPU Unit and

stores the data in D100 to D102 of the CJ-series CPU

Unit with node address 07 on the DeviceNet Network

Node address 07

Node address of remote CPU Unit to be written to = 07 hex (node 07)

Write data size (number of words) = 3 hex

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)

CS/CJ/NSJ Series Instructions Reference Manual (W474)

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