Omron SYSMAC CS1W-LCB01 Operation Manual page 184

Exchanging Data with the CPU Unit
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external contact input will be turned OFF by the user link table when
the read/write operation has been completed.
CPU Unit Memory Type (Area) and Memory Address
Specify the I/O memory address in the CPU Unit that contains the data to be
read/written. Each tag's address is set independently. A bit address can be
specified by setting the A/D (Allocation Size) parameter to Contact.
A/D (Allocation Size)
Specify whether the data being read/written is bit or word data. If the data unit
is a bit, select Contact. If the data unit is a word, select Analog. Each tag's
A/D size is set independently.
R/W (Read or Write)
Specify whether data is being read from the CPU Unit's I/O memory to the
Loop Controller or written from the Loop Controller to the CPU Unit's I/O
memory.
When data is being read, select Rd (→LCB). When data is being written,
select Wr (LCB→).
Contact Synchronization
When the Link mode (read/write timing method) has been set to External
Sync, specify the function block ITEM that will be used as the Sync signal.
Data will be refreshed (read/written) with the CPU Unit each refresh period
while the specified ITEM is ON.
After execution, by turning OFF the ITEM execution will be performed again.
Reading from an ITEM and Writing to an ITEM
When the R/W setting is Rd (→LCB), reading from the ITEM is enabled, the
ITEM designation is set, and the data in I/O memory of the CPU Unit is read
to the specified ITEM in the LCB (Loop Controller).
When the R/W setting is Wr (LCB→), writing from the ITEM is enabled, the
ITEM designation is set, and the designated ITEM in the LCB (Loop Control-
ler) is written to the data in I/O memory of the CPU Unit.
Writing ITEM
When a field terminal block is pasted in a block diagram, the link memory tag
for the I/O memory address allocated to that field terminal will be registered in
the User Link Table automatically. At that point, a tag name will be created
automatically if the CX-Process Tool is set to Field Terminal/Auto-Registration
Mode (see note).
Note To set Field Terminal/Auto-Registration Mode, click the right mouse
button in the User Link Table edit window, and select Field Termi-
nal/Auto-Registration Mode so that a check mark appears next to
the menu selection.
Pulse Output (LCB01/05 Ver. 3.0 or Later, LCB03 Ver. 3.0 or Later)
When the specified ITEM changes from OFF to ON or when the OFF to ON
operation is performed from a sequence control block (step ladder or
sequence table), the pulse output is turned ON only once, it is turned OFF in
the user link table refresh cycle, and then written to the CPU Unit's I/O mem-
ory.
Section 3-3