Setup guide

Chapter 2 System Objects
Object Reference Manual 3-80 www.Automationdirect.com
Parity indicates the parity that Lookout
Direct
uses to communicate with
the hardware device. This Parity setting should match the selection made
on the physical device.
Phone number specifies the number to be dialed if the selected serial
port is configured for dial-up. This Phone number only applies to the
individual protocol object.
PollRate is a numeric expression that determines how often to poll the
device. The object then polls the device at the specified time interval.
Normally, this is a simple time constant such as 0:01 (one second). See
Numeric Data Members
in Chapter 2,
How LookoutDirect Works, of the
Getting Started with LookoutDirect
manual for more information on
entering time constants.
Poll is a logical expression. When this expression changes from FALSE to
TRUE, LookoutDirect
polls the device. You can use a simple expression
like the signal from a pushbutton, or a complex algorithm.
Communication alarm priority determines the priority level of alarms
generated by the Omron object. Such alarms are typically related to
communications with the physical device.
Retry attempts specifies the consecutive number of times Lookout
Direct
attempts to establish communications with a device when it is not getting
a valid response. After it tries the number of Retry attempts specified,
the Omron object generates an alarm and releases the communication port
back to the communications subsystem. The subsystem then moves on to
the next device in the polling queue (if any). See Chapter 3,
Serial
Communications, in the LookoutDirect Developer’s Manual
for more
information.
Receive timeout is the time delay Lookout
Direct
uses in waiting for a
response from a device before retrying the request.
The Skip every… setting instructs Lookout
Direct
not to poll a device it has
lost communication with on every scheduled poll. Instead, Lookout
Direct
skips the device in the polling cycle. Once communications have been
reestablished, the device is polled on its regular cycle.
Omron Data Members
As with all Lookout
Direct
drivers, you can access I/O points and other data
through data members. The following is a table of data members currently
supported by the Omron object class.