LUT400 Communications Options
AG091712 6 of 13
APPLICATION GUIDE
1. 4-20 mA card
Access to Process Variable: Only via 4-20 mA
Access to Secondary Variable: No
Access to variables from HART commands: No
Access to status information: No
Full accuracy: No
PDM access: Yes, locally via HART modem
PACTware access: Yes, locally via HART modem
AMS access: Yes, locally via HART modem
Benefits: Easy to use
Disadvantages:
Do not get any status information on the health of the device
No remote access to the field device
Can only view one variable
Less accuracy
Equipment Notes: Applies to any
manufacturer’s 4-20 mA input cards. Please
note that there are different levels of
accuracy and conversion speed in 4-20 mA
cards.
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