Setup guide

Chapter 2 System Objects
Object Reference Manual 3-68 www.Automationdirect.com
Note
When you use the CA, CD, CI, CO, CR, PW, RL, RT, and TC data members with
FieldPoint serial modules, they are synonyms for analog or digital inputs or outputs as
follows:
CI, CD—Digital Input
CR, CA, RL—Digital Output
PF, PP, RT, TC—Analog Input
PW—Analog Output
With FieldPoint Ethernet, these data members represent different FieldPoint modules.
Note
The first two characters of the I/O data members represent the kind of module being
accessed. The next three digits represent the device address of the module. This is the
address of the I/O module itself, not the network module that governs it. Following the
period are two digits representing the channel number within the module.
Not all of these data members are valid for every FieldPoint module. For all the device
Poll logical no yes When transitioned from low to high,
Lookout
Direct
begins a poll cycle on
the device.
PollRate numeric no yes Specifies the frequency at which
Lookout
Direct
polls the device.
PW000.00 - PW255.15 numeric yes yes Sets the FieldPoint pulse module duty
cycle on/off ratio. A setting of 10.00
means the pulse is on for 10% of the
pulse period and off for 90%.
RL000.00 - RL255.15 logical yes yes Use to connect to digital output
channels on a FieldPoint relay
module.
RT000.00 - RT255.15 numeric yes no RTD temperature measurement
module analog input; returns a value
in degrees Centigrade.
TC000.00 - TC255.15 numeric yes no Use to connect to analog input
channels on a FieldPoint
thermocouple module.
Update logical yes no Goes high when Lookout
Direct
begins a poll cycle on the device.
Table 3-13. National Instruments FieldPoint Data Members (Continued)
Data Member Type Read Write Description