Now you have rephrased your question and I think Daniel's answer was given according to the original form of your question.
Or do we need to assign the VFD signals to a non-Hart card.??
The simple answer is no. You don't need additional modules.
You can assign the VFD signals to the HART module.
In the above mentioned manual you can read,
Order number
6ES7332-8TF01-0AB0
Properties
● 8 outputs (current)
● Resolution:
– 15 bits (0..20mA)
– 15 bits (+ sign) (4..20mA)
● Output type selectable per channel:
– Current output with HART
– Current without HART
– Channel deactivated
● Selection of any output range per channel
– 0...20 mA (with HART)
– 4...20 mA (with HART)
Best regards,
H-H