Honeywell IPC 620 family PLC and Data Collection Module as described in section Supported Devices.
Verify that green indicators in PLC and DCM are on for power and self-test.
Custom Cable wired as shown in the diagram in Custom Cable.
RS232 Port on NT Host Computer.
Connect DCM and CIMPLICITY system using the custom cable.
Use hwabc_diag program to verify communication.
About CIMPLICITY Honeywell IPC 620 Communications.