7
2.1.3
MODBUS RTU PROTOCOL
The Modbus RTU address can be verified and changed (with the proper authorization code) from the keypad/LCD or
can be made using MCS-CONNECT SERVICE WINDOW..
The following steps will display the Modbus RTU Network address, and the Baud Rate:
Press the Menu key, select Serv Tools, and then press the Enter key.
Select RS485 Network then press Enter.
Select Protocol then press Enter. Change the protocol to Modbus RTU.
Select address then press Enter. Change the address then press Enter.
Select Baud then press Enter. Set the baud rate then press Enter.
Connect the communication wires to the TX RS485 three-position terminal located above the Ethernet
connector.
Reset Magnum for change to take effect.
2.1.4
MODBUS TCP/IP PROTOCOL
This protocol is always active.
Make sure the MCS-Magnum network settings are set correctly.
If you are going to manually assign the IP Address, Subnet Mask, and Default Gateway.
Press the Menu key, select Serv Tools, and then press the Enter key.
Select Ethernet Network then press Enter.
Set “DYNAMIC IP” to NO
.
Set the “IP Address”.
Set the “Subnet Mask”.
Set “Default Gateway”.
Reset Magnum for change to take effect.
If you are going to let your network assign the IP Address, Subnet Mask, and Default Gateway
:
Press the Menu key, select Serv Tools, and then press the Enter key.
Select Ethernet Network then press Enter.
Set “DYNAMIC IP” to YES.
Connect the MCS-Magnum to the network and power up the board.
2.2. PROTOCOLS USING MCS-BMS-GATEWAY
The MCS-BMS-GATEWAY is a microprocessor based communication device that provides translation from
BACnet IP to BACnet MS/TP, or Johnson Control N2.
Information that can be transmitted includes the status of control points, alarm information, digital inputs, ana-
log inputs or setpoints.
For more information on the MCS-BMS-GATEWAY please go to www.mcscontrols.com.
Network protocols are formatting rules that specify how data is sent and received between devices.
Protocols are necessary for devices to interact with each other.
