Chapter 1 Product Overview; Description Of Basic Features; Module Features; Compatibility With Simatic Cpus - Siemens SIMATIC 505 User Manual

1.1

Description of Basic Features

Module Features

Compatibility with
SIMATIC CPUs

Power Sources

Operating Modes

Optional Time
Constant Filter
1-2 Product Overview
The SIMATIC 505 Isolated Interrupt Input Modules have 16 discrete input
circuits and operate on different voltages depending on the module. The
PPX:505–4317 operates on 24 VDC, the PPX:505–4318 on 48 VDC, and the
PPX:505–4319 on 125 VDC. Up to 8 of the 16 points can be configured as
interrupt points. Isolation is provided between each point. The modules
operate identically except for differences in input voltage.
The Interrupt Input Modules are compatible with all Series 505
The Interrupt Input Modules are compatible with all SIMATIC 505 CPUs
when used in the non-interrupt mode.
When interrupt mode is selected for any of the configurable inputs, the
module is compatible with the SIMATIC 545 and 555 CPUs with Firmware
Release 2.1 (or greater). Consult the release notes or other associated
documentation to determine if interrupt mode is supported by a particular
CPU.
The Interrupt Input Modules sense incoming DC signals from field devices
and operate on power supplied by the I/O base backplane. Refer to your
system manual for instructions on supplying power to the system I/O base.
The Interrupt Input Module can be used in one of the following two modes.
16 isolated discrete inputs, all non-interrupt mode:
When this module is used in non-interrupt mode, it functions as a
standard 16-point discrete input module and can be installed in any
base (local or remote) of a Series 505 programmable controller system.
Configurable mix of interrupt inputs and non-interrupt inputs:
When this module is used in interrupt mode, it functions as a 32-point
I/O module (16 physical inputs and 16 internal points) and can only be
installed in the local base of the system. Local Base is defined as the
I/O base containing the CPU.
Interrupt input mode triggers an immediate response to a field device
condition without having to wait for the CPU to complete its program scan
cycle.
You can configure the module to detect transitions from on to off, off to on,
or either edge when you select interrupt type for a pair of input points.
An eight-position dipswitch allows you to enable a 10-ms filter on any of the
16 physical input points in groups of two.
SIMATIC 505 Interrupt Input Module User Manual
bases.