Access To External Device Using Serial Communications; Precautions In Using Serial Communications - Omron WS02-SIMC1-E - V1.9 REV 02-2009 Operation Manual

Serial Communications Connection

5-3-2 Access to External Device Using Serial Communications

Slave initiation via Host Link (FINS communications)
Access via No-protocol

5-3-3 Precautions in Using Serial Communications

Using Programmable Terminal via NT Link
FINS Command addressed to Serial Port
Changing Communications Protocol during [Work CX-Simulator]
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When performing FINS communications via Host Link by a ladder program,
external communications from a computer are not restricted, which is different
from the case of FINS communications for a network (communications via a
Network Communications Unit). (Network communications are restricted
within the local computer. Refer to 6-1 Outline of Network Communications for
details.) Thus the slave initiation function can be checked by connecting the
COM port on the computer to another computer.
Slave
initiation
No-protocol communications are available for connecting a barcode reader,
etc., allowing to process data read from a barcode reader in more practical
way.
Even when connecting a PT via NT Link, the Programming Console function
and Device Monitoring function are not available. In addition, use a PT with a
version of NT31/631-V2 or higher. When connecting a PT with the previous
version, select Host Link as the communications protocol.
In the CX-Simulator's FINS communications, only a command addressed to
the CPU Unit is accepted. FINS communications addressed to the serial port
of individual Ladder Engines are not available.
When the communications protocol has been changed by the
CX-Programmer's PLC Setup settings, etc., be sure to once [Disconnect] and
then [Connect] again. The newly set protocol becomes effective after the
[Connect].
Program
Section 5-3