Omron SYSMAC CJ1W-SCU21-V1, Operation Manual

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Functions Added in the Unit Version 1.2 Upgrade 9
Enhanced
protocol
macro func-
tions Link word specification data
exchange timing On-request I/O
refreshing only
(request to refresh
sent to CPU Unit at
every send/receive
command execution,
and data exchanged
during I/O refresh)
In this method, after
the send command is
executed, a delay
occurs before the
actual message is
sent.
Continuous I/O refreshing (selected in DM Area
settings) is supported in addition to the on-request
I/O refreshing available in earlier models.
Continuous I/O refreshing is performed from the
CPU Unit during protocol macro execution, regard-
less of requests from the Board/Unit, and data in
the Board/Unit is accessed during send/receive
command execution. When the send command is
executed with this method, the actual message can
be sent immediately.
Reception buffer processing
for PMCR(260) instruction
execution (immediately
before communications
sequence execution) Clearing to zero only Select to clear or hold the contents of the reception
buffer during full-duplex communications (set in the
allocation DM Area).
This enables the data in the reception buffer
received in the previous communications sequence
to be held after switching the communications
sequence during full-duplex communications.
Baud rate for protocol macro
mode 38,400 bps max.
(57,600 bps not sup-
ported) 57,600 bps supported (115,200 bps not supported)
Standard sys-
tem protocol Host Link C-mode Command
Master None (protocols must
be created using CX-
Protocol) Provided
A Host Link Master can
be used to easily access
the Host Link slave PLC
(e.g., A PLC slave on a
moving body can be
accessed via a WM-
series Wireless Modem
in a Host Link.) Host Link C-mode com-
mands can be used to
access a C-series or CS/
CJ-series PLC slave.
Host Link FINS Command
Master Host Link FINS com-
mands can be used to
access a CS/CJ-series
or CVM1/CV-series PLC
slave.
This protocol can also
be used to access slave
PLCs on the network.
Mitsubishi Computer Link
Master (A-compatible, 1C
frame, model 1) Provided
Computer Link commands can be used to access a
Mitsubishi PLC (Sequencer CPU Module) slave.
CompoWay/F Master --- Communications sequences with different send
and receive protocols are provided by using send/
receive commands with ASCII conversion.
The communications sequences have been
expanded to include CompoWay/F commands
such as VARIABLE AREA READ/WRITE and
OPERATING INSTRUCTIONS.
Item Earlier versions
(pre-Ver.1.2)
Unit version 1.2 or later