Micromod MOD: 1800P - MOD 30ML Identity Module (Version 2) System, I/O and Communications Functions - Manual (Page 242)

Logic Functions - Book 1
DIGITAL INPUT BLOCK
7-32
FALSE 1 If a FALSE latch is specified, a transition to FALSE by the input is
latched until the value is read by the task.
TRUE 2 If a TRUE latch type is specified, a transition to TRUE by the input is
latched until the value is read by the task.
TRANS. 3 TRANSITION latch will latch either transition. The transition latch
type applies to the input signal before the input action is applied.
07 Action (ACTION) ................................................................................................................ CWR
The action of the block is determined by configuring and/or writing this attribute. Action is
applied to the input before it is put into the result.
REVERSE 0 The input for the block is complemented before it is stored in the input
value attribute (R).
DIRECT 1 The input for the block is not reversed.
08 Initial Result Value (R) ...................................................................................................... CWR
This is the block output value after conditioning and action are applied. During startup, this is
the initial data value.
09 Result Quality (RQ) ...........................................................................................................– WR
This data quality field will go BAD if any of the blocks quality check becomes active.
7.3.3 Typical Block Connections for Digital Input Block
Typical softwiring block structures used on softwiring diagrams are shown in Figure 7-22.
Softwiring connection to
another block (quality
connection is linked to result).
ACTION
RQ
R
MODIN
Result Quality
Result
Operator write access to set action filter time.
Operator indication
of block action.
Action
Filter Time
DIM1
MODOUT
DI1
CL11
I1
I2
Figure 7-22. Digital Input Block, Typical Connections
7.3.4 Digital Input Block Events
The event codes (and their suggested text messages) for the digital input block are given
below. See database attributes descriptions for additional information. See the system event
block for a description of event transitions.
0 BLOCK STATE SET TO RUN
1 BLOCK STATE SET TO HOLD
2 BLOCK STATE SET TO OFF
3 BLOCK STATE SET TO DEBUG