This page is a technical reference for a subset of the Cat M5X (Caterpillar) generator controller
EMCP 3.1, 3.2, and 3.3 Modbus memory map. In many generat…
Modbus Addressing Limits: 9,999 Points and 5-Digit vs 6-Digit Addressing
A common source of confusion in Modbus projects is point numbering and “address rang…
EIA-485 (formerly RS-485 or RS485) is a specification for the
physical layer of a network that uses the difference in voltages between two wires (Three
wire) to conveys data.
One polari…
The RS-232 Mini Tester is an efficient device to connect in series with any RS-232 interface for testing a serial (RS-232) link. An example of how an RS-232 mini tester looks like is shown in figure-1…
FieldServer FS20 Series: Connecting to ICD102A Optical Isolator via 2-Wire RS485
This article shows a simple, practical wiring approach for connecting a FieldServer FS20…
USB-COMI-SI-M – USB-to-Optically Isolated RS-422/485 Adapter
The USB-COMI-SI-M is a USB-to-serial adapter that provides a reliable, optically isolated
interface f…
I was asked this question today,What would happen if you had two BACnet MSTP devices with different MAC addresses but the same BACnet Device ID (Node ID) on the same network, and you sent a Broadcast…