6 Discrete Output Function block
Device functions Proline Promag 55 FOUNDATION Fieldbus
120
Hauser
In the AUTO operating mode (automatic operation), the set point value (parameter SP_D) is
prescribed directly in the Discrete Output function block. In this case, the parameter CAS_IN_D is
not taken into consideration in the internal calculation.
In the MAN (manual) operating mode, the output value (parameter OUT_D) can be prescribed
directly in the Discrete Output function block. No internal calculation takes place.
6.2
Important functions and parameters
of the Discrete Output function block
The primary functions and parameters of the Discrete Output function block are listed below.
!
Note!
All FOUNDATION Fieldbus parameters available are described in the "FOUNDATION Fieldbus
Overview" Operating Instructions (BA013S) (available at:
→
www.endress.com
→
Download).
6.2.1
Selecting the operating mode
The operation mode is set by means of the MODE_BLK parameter group. The Discrete Output
function block supports the following operation modes:
• AUTO
• MAN
• CAS
• RCAS
• OOS
6.2.2
Safety behavior
There is a safety default available (fault state) for the Discrete Output function block. This is
activated when a fault condition (of the corresponding valid set point value) exists longer than
defined in the parameter FSTATE_TIME, or when the parameter SET_FSTATE in the Resource
Block is activated. The safety operation is determined via the parameters FSTATE_TIME,
FSTATE_VAL_D, and IO_OPTS.
6.2.3
Assignment between the Discrete Output Function block
and the Transducer Block
The assignment or connection between the Discrete Output function block and the Transducer
Block takes place in the Discrete Output function block via the parameter CHANNEL.
→
Parameter CHANNEL
→
16 (= Discrete Output function block)
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