Rockwell Automation 1747-PIC Installation Instructions

Installation Instructions

SLC 500™ RS-232 to RS-485 Interface Converter

(Catalog Number 1747-PIC)

Installation Instructions

9-pin to 25-pin Adapter

(if required)

Interface Pinouts for 25-Pin Connector

Pin Function Direction

7 GND Signal Ground Bi-directional
2 TXD Transmit Data PC to Converter

20 DTR Data Terminal Ready PC to Converter

4 RTS Request to Send PC to Converter
3 RXD Receive Data Converter to PC

ALLEN-BRADLEY

SLC 500

SLC 500 20-Point Fixed Controller

with 2-slot Expansion Chassis

1747-PIC

1747-C10

SLC 500 Modular Controller

Publication 1747-IN024A-EN-P - September 2002

2 SLC 500™ RS-232 to RS-485 Interface Converter

Tips for Successfully Using the 1747-PIC

The following tips and restrictions will help you operate the 1747-PIC successfully
with PCs running RSLinx™ in Windows® 2000, Windows® XP and later operating
systems.

COM1/COM2 Only

The 1747-PIC will only work with built-in COM1 and COM2 serial ports. It will not
work with USB to serial adapters, serial port extender boards that add more COM
ports or PCMCIA-format serial port cards, regardless of the operating system.

Infrared Ports

Infrared ports commonly share resources with the COM ports. If your computer has
an infrared port, disable it to prevent resource conflicts.

Power Management

A power management system can prevent the 1747-PIC driver from using the
resources it needs, if it engages while the 1747-PIC is in use. Disable power
management functions to prevent this problem.

Advanced Configuration and Power Interface (ACPI)

ACPI is a power management system used on newer computers with Windows
2000, Windows XP and newer operating systems. ACPI often interferes with the
1747-PIC driver. If your computer uses ACPI and you have problems with the PIC
driver, please contact Rockwell Automation Technical Support for assistance.

The Windows 2000/Windows XP 1747-PIC Driver Requires Exclusive
Access

If you are running RSLinx as a service, the 1747-PIC driver must have exclusive
access to the COM port. When you configure the driver, make sure you check the
“Reserve COM Port for Exclusive use by this Driver” option.

Administrative Privileges

Make sure you are logged in as a user with full local administrative privileges when
you configure any driver. Once it has been configured with exclusive access (see
previous item), you can run the driver with a standard user account.

Publication 1747-IN024A-EN-P - September 2002