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Analog Input Module
RTD Input Module
Host Interface
The RTD Input module has the following data types:
H
H
H
H
A starting reference and length in the Bus Interface Unit (BIU) data tables for each data type
is selected during module configuration. Depending on the configuration that has been set
up for each RTD, the input data can be reported as tenths of ohms, tenths of degrees
Fahrenheit, or tenths of degrees Celsius.
This module exchanges data with a BIU in the same manner as other types of I/O
modules—it provides all its input data and status bits when requested by the BIU, and
receives fault-clearing commands from the BIU via its assigned output bits. Note that the
BIU can be configured not to send status data over the network.
The module can also be configured for "Group" data transfer with the BIU or with other
intelligent devices in the same Field Control station. Group data transfer, and the steps for
configuring it, are described in the Bus Interface Unit User's Manual.
Compatibility
This module must be used with a Bus Interface Unit revision 2.0 or later.
4 analog inputs (4 words)
32 bits of discrete input data for module and channel status (use of this data is optional)
8 bits of discrete output data for fault clearing to the module (also optional)
Analog output data defaults to a length of 0, and should NOT be used for most
applications.
Units Selected
Tenths of Degrees
Tenths of Ohms
Integer Ranges
–32767 to +32767
0 to 65535
GFK-1206D
Engineering Units
Ranges
–3276.7 to +3276.7
0 Ohms to 6553.5 Ohms
3
June 1997
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