Micromod MOD: 1800P - MOD 30ML Identity Module (Version 2) System, I/O and Communications Functions - Manual (Page 239)

Logic Functions - Book 1
DIGITAL INPUT BLOCK
7-29
7.3 DIGITAL INPUT BLOCK (DI)
The digital input block provides an input link from a physical digital input module (DIM or
RDIM) to a loop. A digital input module conditions a field signal and processes the signal
through an on-board select circuit which passes all digital data between the modules and the
module blocks at the base scan rate of 50 milliseconds. Functions performed by the digital
input function block (DI) include input filtering parameters and action.
Block outputs are the data and data quality. A functional block diagram of a digital input block
is shown in Figure 7-20. The menu used to configure the Digital Input block is shown in
Figure 7-21.
Discrete Value
Input Module Status
Action
(DIR / REV)
Input Module
No.
Bad Inputs
Accepted
(YES/NO)
BAD
GOOD
Quality Check
Block State
RUN, HOLD,
OFF, DEBUG)
Conditioning
Filter Time
Number of
Millisecond
(0 to 65500)
TRANS.
ANY
TRUE
FALSE
Latch Type
Result
Result Quality
Figure 7-20. Digital Input Block, Functional Block Diagram