Knowledge Base

The MS120 with Firmware dialect 20 and later supports Xwire. Xwire is a method of connecting several boards together into a multiprocessor network.

The Xwire connections are on connector X1. The board’s Xwire address is set via your program, if it is to be a slave.

Xwire documentation.

The maximum number of data bytes that can be transferred into or out of the MS120 via Xwire is 32.

Electrically the MS120 can drive 10 unit loads and represents one unit load. That means one MS120 board can drive 10 other MS120s or other “unit load” boards.

The master configuration table may contain a maximum of 50 entries. This is more than the hardware limit. Conceivably one slave board might have more than one logical device (address) on it.