GE IC690ACC902 Mini-Converter (RS-485/RS-232) Kit with cable for NEC 9800

GE Intelligent Platforms understands that equipment builders are continuously looking for 

ways to improve the performance and flexibility of their equipment while reducing size and complexity. 

Fast, easy-to-configure connectivity to GE’s PACSystems controllers and extensive range of I/O 

options enables scalable machine automation and highly distributed modular machine designs. 

The end result is high performance automation for the Industrial Internet.

The Mini Converter Kit consists of an RS-422 (SNP) to RS-232 Mini Converter integrated into a 6 foot (2 meter) serial extension cable,

and a 9-pin to 25-pin Converter Plug assembly. 

The 15-pin SNP port connector on the Mini Converter plugs directly into the serial port connector on the programmable controller. 

The 9-pin RS-232 port connector on the Mini Converter cable connects to an RS-232

compatible device.

Two LEDs on the Mini Converter indicate activity on the transmit and receive lines.

The Converter Plug is required to convert the 9-pin serial port connector on the Mini Converter to

the 25-pin serial port connector on an IC647 computer, an IBM® PC-XT, or a PS/2® Personal Computer.

The IC640 industrial computer requires an additional adapter (not supplied – please contact your local PLC distributor) for use with the Mini Converter.

Tables 1 and 2 list the Mini Converter pinouts. The direction of signal flow is with respect to the Mini Converter.

Program development process 

A resource contains several programming units called Program Organization Units (POUs). 

POUs can be programs, functions or function blocks. Programs can be described in any of the five IEC 61131-3 languages plus Flow Chart.

The Build 

To validate the project, the project code must be built. This step is also very useful for syntax checking; 

all detected errors can be easily located with a simple mouse-click. The generated code is fully publicly documented and supported. 

The code generator produces the code for each resource.

GENERAL SPECIFICATIONS

Common mode rejection (using 50/60Hz filter)

• > 120 dB @ 50/60 Hz

Series mode rejection (using 50/60Hz filter)

• > 65 dB @ 50/60 Hz

Maximum input voltage (except current I/P)

• ± 25V

Common mode voltage between channels

• 250 V ac rms

Isolation

• Channel to channel – 250 V ac rms

• Any channel to Railbus – 250 V ac rms

• Any channel to Bussd Field Power – 250 V ac rms

• Railbus to Bussed Field Power – 150 V ac rms

Input filter response

• Time constant 4 ms

Input impedance

• > 1 M ohm

Data Format

• 0 to 65535 corresponds to selected span

Linking variables to I/O channels 

Before defining the project code, the I/O is defined in the Workbench in the form of a tag database, 

which identifies the I/O channels and their respective field devices. Once a device is selected, a simple mouse-click 'connects' a variable to a channel.