Digital Input Modules - Motorola V186 - Cell Phone - GSM System Planner Manual

Digital Input Modules

Low Voltage DI Modules:
The ACE3600 low voltage Digital Input (DI) module can have 16 or 32 inputs. The
following DI modules are available:
16 DI Fast 24V
32 DI Fast 24V
16 DI Fast 24V IEC TYPE 2
32 DI Fast 24V IEC TYPE 2
Two types of low voltage ("wet") inputs are supported, IEC 61131-2 Type II compliant
inputs and 24V "MOSCAD compatible" inputs.
In the 32 DI modules, the first 20 inputs can function as fast counters. In the 16 DI
modules, all inputs can function as fast counters. A counter's maximum rate is dependent
on the module type (see the specifications below.)
All the inputs are optically isolated. The DI modules support optional 24V DC floating
plug-in power supplies (for contact "wetting" or other purposes).
The 16 DI Fast 24V and 32 DI Fast 24V modules can handle AC and DC input signals.
The user can select DC or AC operation per module. When AC configuration is selected,
the Fast Capture, Counter Function and Input Filters (see below) are disabled.
120/230V (HV) DI module:
The ACE3600 high voltage Digital Input (DI) module has 16 inputs. All the inputs are
IEC 61131-2 Type2 compliant and all are optically isolated.
This module supports high voltage AC or DC signals in the inputs. The Counter function
is not supported in this module.
Common Characteristics to all DI modules:
Each DI can be an event trigger (interrupt-driven) to a high priority fast process. The high
priority fast process enables very fast activation of an output in response to an input
trigger and logical conditions. This high priority fast process is not dependent on the I/O
scan.
When the DI module is in DC mode, each DI can be configured as a Fast Capture DI.
Fast capture causes the SCAN ladder output operation to get the first change that
occurred since the previous scan. When fast capture is disabled, the scan gets the current
value of the DI (in this case, any DI changes between scans are missed.)
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