GFK-1504N
Chapter 9 Discrete Mixed Modules
9-17
9
IC200MDD844
Mixed Module, Output 12/24 V DC Pos. Logic 0.5A 16 Points
/ Input 24 V DC Pos/Neg Logic Grouped 16 Points
Discrete input/output module IC200MDD844 provides one group of 16 discrete
outputs and two groups of 8 discrete inputs. The outputs are positive or sourcing
type outputs. They switch the loads to the positive side of the DC supply and thus
supply current to the loads. Inputs are positive logic; they receive current from
input devices and return the current on the common. Input devices are connected
between the input terminals and common terminals.
1234567 831
IC200MDD844
OUT 12/24DC POS 16PT
IN 24DC POS/NEG 16PT
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
OK
Q
I
FLD
PWR
OK
Note
: Negative logic input functionality and 12V output functionality require
module version IC200MDD844C or higher.
An external DC power supply must be provided to switch power to the loads.
Intelligent processing for this module is performed by the CPU or NIU. The
module provides 16 bits of discrete input data and receives 16 bits of discrete
output data.
LED Indicators
Individual green LEDs indicate the on/off state of the output points and input
points. Operation of the output LEDs is dependent on field power, but independent
of load conditions.
The green FLD PWR LED is ON when field power is applied to the module.
The green OK LED is ON when backplane power is present to the module.
