RS232-RS485 Convertor Manual V1.02 28/06/01
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4.0 PRO104 – 4 Channel Eurocard Rack Production ISP System 4.1 Overview
The PRO104 programmer contains 4 PPM programming modules on an RS-485 network.
These are controlled from a single ‘Supervisor PC’ running the ISP-PRO software. An RS-
232 to RS-485 convertor is required to convert the RS-232 signal from the PC COM port to
an optically isolated RS-485 signal suitable for interfacing with the PPM’s on the network. It is
possible to expand from 1 up to 4 PRO104’s (16 PPM Boards in total).
The typical setup is shown in the figure below:
Figure 11