GE 90-30 PLC Series Installation And Hardware Manual page 206

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The I/O Processor is configured using the Series 90-30 Hand-held Programmer, Logicmaster
90-30, VersaPro, or Logic Developer-PLC software. Many configuration parameters can be
modified from the user's application program as well. Each configuration parameter is set to a
factory default value which is suitable for many applications. There are no jumpers or DIP
switches to set on the module. Six green LEDs at the top of the module indicate the operating
status of the module, the status of configuration parameters, and the state of hardware outputs 1
through 4.
Module Features
Module features include:
Inputs can be used as count signals or edge-sensitive strobe signals. Outputs can be used to drive
indicating lights, solenoids, relays, and other devices.
Power to operate the module's logic circuitry is obtained from the 5 VDC bus on the baseplate
backplane. Power sources for the input and output devices must be supplied by the user or by the
+24 VDC isolated output of the Series 90-30 power supply. The I/O Processor module provides a
selectable threshold voltage to allow the inputs to respond to either a 5 VDC signal level or a 10 to
30 VDC signal level. The threshold is selected by configuration.
All configuration parameters for the module are downloaded from the PLC to the I/O Processor
after it passes its internal diagnostics. Once the module has been successfully configured, the
CONFIG OK LED will turn on. Configuration parameters can be changed using the
programming/configuration software or the Hand-Held Programmer.
Operation of the I/O Processor module is monitored by a watchdog timer circuit. If the watchdog
timer detects a module failure, it will force all outputs off and turn off the MODULE OK LED.
I/O Processor Module Documentation
Please refer to publication GFK-1028, Series 90-30 I/O Processor User's Manual.
8-28 Series 90-30 PLC Installation and Hardware Manual – August 2002
Up to 12 positive logic (source) inputs with input voltage range selection of either 5 VDC
(TTL) or 10 to 30 VDC (non-TTL).
Up to eight positive logic (source) outputs: four outputs with 1 amp rating and four
configurable outputs with 0.5 amp rating
Outputs protected by replaceable fuse (one fuse common to all outputs)
Dedicated processor provides 500 ∝s I/O update
Counts per Timebase register for input rate measurement
Total Counts register (32-bit) accumulates total counts received by module
Four Strobe data registers for input position capture
Two Timer data registers for indicating input pulse length or input spacing in milliseconds
Thirty-two range comparators (outputs returned in %I and %AI data)
Software configuration
Internal module diagnostics
Individual LEDs that indicate Module OK and Configured OK status
Individual LEDs that indicate state of Outputs 1 through 4
A removable terminal board for connection of field wiring.
GFK-0356Q