2

Logicmaster 90 Serial Version and Workstation Interface Board

If the programmer is equipped with the serial version of Logicmaster 90±70 and a Workstation Interface Board (IC647WMI920 for Workmaster II or IBM PS/2 computer, or IC640WMI910 for a Workmaster or IBM PC±XT/AT computer), connection is made to the Remote I/O Scanner's RS±485 serial port. If the Remote I/O Scanner is not part of a multidrop network, follow the instructions below. If the Remote I/O Scanner is installed on a multidrop serial communications network, refer to the instructions on page 39 instead.

The Workstation Interface Board can be used for either parallel or serial communications with a remote drop. The board provides ground isolation allowing the programmer ground to vary by up to 500V.

Grounding

For proper operation, the programmer must have a ground connection in common with rack 0. Normally, the common ground connection is provided by connecting the programmer's power cord to the same power source (with the same ground reference point) as the rack. If a common ground cannot be established, use GE Fanuc RS±422 Isolated Repeater/RS±232 Converter IC655CCM590, or an equivalent product.

Serial Port Termination

For direct programmer connection, the Remote I/O Scanner's serial port must be terminated. Connect a 220Ω resistor across pins 10 and 11 and another 220Ω resistor across pins 8 and 15. These connections must be made inside the connector's D±shell. At the other end of the link, terminate the RD and CTS pins in the same way.

Connection Instructions

For a Workmaster I or II computer, use cable IC647CBL704.

1.Attach the 37±pin male connector to the Workstation Interface Board.

2.Attach the 15±pin male connector to the serial port connector on the Remote I/O Scanner.

a44884

SCANNER

WSI

SERIAL

SERIAL

CABLE

WORKMASTER II

36

Series 90±70 Remote I/O Scanner User's Manual ± July 1992

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GE GFK0579B user manual Serial Port Termination
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GFK0579B specifications

The GE GFK0579B is a compact and efficient refrigerator designed to meet the needs of modern households. With its sleek design and impressive features, it has quickly become a popular choice for those looking for functionality without compromising on aesthetics. One of the standout characteristics of this model is its energy efficiency, which is crucial in today's environmentally conscious market. The GFK0579B is equipped with advanced cooling technologies that ensure optimal temperature control while minimizing energy consumption.

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