Connectors and Controls
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Note 1: When using an RS485 bus of substantial length, do not forget to use 120 Ohm termination resistors on both ends of the bus.
•Each Bus Probe has a detachable terminal block with four terminals: ground (GND), power (+V), as well as RS485+ and RS485- lines of the RS485 signal pair.
•Communications parameters of the RS485 port are 38400-8-N-1.
•When using an RS485 bus of substantial length, do not forget to add 120 Ohm termination resistors on both ends of the bus.
•The MD button* has two uses:
oFor enabling writes into protected Modbus registers of Bus Probes;
oFor entering the firmware update mode of the Monitor/Loader.
•Status LEDs display a number of device states and errors.
• Mounting holes can be used to attach Probes to flat surfaces.
* Each Bus Probe comes with a metal pin that makes pushing and holding down the MD button easier.