Real Time Automation, Inc.
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1-800-249-1612
Configuring Input Instance
Follow these steps to manually configure the Input Instance.
1)
Select
View Input Instance
if not already selected.
2)
Run Idle Header
: Check this box if the I/O adapter’s data contains information about the
validity
of the input data. Default value is unchecked since most devices don’t use this.
3)
Request Packet Interval (RPI):
This is the amount of time between each read/write request to
the adapter. If this value is faster than the adapter supports, an error will occur.
4)
Input Instance:
This is the input instance defined by the I/O adapter device. This must match for
proper communication.
5)
Priority:
Select the appropriate value as defined by the I/O adapter. Default value is scheduled.
6)
Connection Type:
Select the type of TCP connection to the I/O adapter.
a.
Unicast:
This means the gateway will communicate directly to the I/O adapter’s IP
address. Set by default.
b.
Multicast:
This means the gateway will communicate using a class D IP address. This
option requires IGMP snooping and managed switches for proper functionality.
7)
Select a
Data Type
and enter the number of
Data Elements
that the instance allows for to make
the data meaningful. The number of data elements must match the values set by the I/O
adapter for the Input Instance requested. See data limits for the various data types below.
