Input And Output Identification; Figure 7 - Rj45 Pinout; Figure 8 - Input And Output Identification (Staged Boiler) - Prolon M2000 Series Hardware Manual

Input and Output Identification

All the inputs and outputs of the M2000 use pluggable screw type terminal blocks with elevator style clamping, which
make connections easier and more secure.
The M2000 Boiler Controller has 2 separate communication ports offering the same functionality on each. Both act as
ports for incoming Modbus communications from other Prolon devices or interfaces, such as a Network Controller or
remote computer with Prolon Focus software.
The "INT" Port (see below) offers dual RJ45 type connectors in parallel with screw type terminal blocks. The RJ45 con-
nectors allow the use of premade CAT5 cables for simple plug-and-play RS485 communication. These RJ45 connectors
follow the Modbus pinout specification for RS485 communication.
INT Port: Incoming RS485
Network communication (Modbus)
AO3 Valve (0-10 / 2-10 / 0-5 VDC)
AO1 Pump 2 (ON/OFF) (0-10 VDC)
DO5 Pump 1
DO4 Boiler Stage 4
DO3 Boiler Stage 3
DO2 Boiler Stage 2
DO1 Boiler Stage 1
REV. 7.2.0 / PL-HRDW-BLR-M2000-C/F-EN

Figure 7 - RJ45 Pinout

Figure 8 - Input and Output Identification (Staged Boiler)

Disable Boiler Call (Dry Contact)
Use Max Heat Setpoint (Dry Contact)
Proof of Pump 2 (AO1) (Dry Contact)
Proof of Pump 1 (DO5) (Dry Contact)
Return Water temp sensor (10K thermistor)
Supply Water temp sensor (10K thermistor)
Outside air temperature sensor (10K thermistor)
NET Port: Incoming RS485 Network
communication (Modbus)
Controller's Power Source
(24VAC - Class 2)
9