Troubleshooting guide

38  Hardware Configuration Reference Guide
1784-PCMK
This card provides a PCMCIA (Personal Computer Memory Card International
Association) communication interface to Data Highway Plus (DH+) and Data
Highway 485 (DH485) networks, and the communication port on the front of
PLC-2 processors. There are no explicit configuration instructions for this card, as
Windows can handle any configuration required.
For more information on the 1784-PCMK, please refer to PCMK Communication
Card User Manual, publication 1784-6.5.19.
IMPORTANT
Your computer must be PCMCIA 2.1 compliant to support the
PCMK card.
EMM386.EXE
Loading EMM386.EXE in the CONFIG.SYS file may interfere with the driver’s
ability to map the 1784-PCMK into MS-DOS memory. Either remove
EMM386.EXE from CONFIG.SYS, or use it with the WIN= option in the
command line. Refer to the What is Memory Management Software section in
Chapter 1 for more information on EMM386.EXE.