Modbus BMS gateway CCM-18A

Modbus BMS gateway CCM-18A

For CCM-18A/N-U can be connected up to 16 indoor units.

For CCM-18A/N, if there are the V4 Plus and D4 plus series indoor unit , it can be connected up to 64 indoor units and 4 outdoor

CCM-18A support the Modbus protocol network, bridge the Midea central A/C s ystem to the BMS,  and support RTU or TCP/IP mode.

1.Support the Modbus protocol network

2.Built-in WEB server function

3. Each gateway can be connected up to 16 or 64 indoor units and 4 outdoor units (4 outdoor units must be in the same system)

4. Transfer the information via the RTU mode

5.Can directly connect with indoor/outdoor units without centralized controller CCM30/CCM03 and monitor controller CCM02

Main features

1.Can check and control all indoor units through built-in Web server functions.

2.Can directly connect with indoor/outdoor units without centralized controller CCM30/CCM03 and monitor controller CCM02.

3.Can control indoor units, configure gateway through Web function in the LAN.

4.Can connect to the BMS system through TCP/IP or RTU.

5.BMS system can control and get the running real-time data of the air conditioner through CCM-18A.

Two types for your choice:

For CCM-18A/N-U can be connected up to 16 indoor units.

For CCM-18A/N, if there are the V4 Plus and D4 plus series indoor unit , it can be connected up to 64 indoor units and 4 outdoor units, and then if there are the V4 and D3 series indoor units, i t can be connected up to60 indoor units and 4 outdoor units.

1) When the baud rate of the outdoor unit is 600, can be connected up to 64 indoor units and 4 outdoor units.

2) When the baud rate of the outdoor unit is 4800, can be connected up to 60 indoor units (indoor address must be from 4 to 63) and 4 outdoor units.

3) 4 outdoor units must be in the same system and the indoor units can be from differrent systems but address is not repeated.

Ports instruction

WAN port： Connect to the router by 5 Ethernet cables to ensure that PC can access to the web page.
A1B1E port：Connect to the XYE ports of the indoor unit and the K1K2E ports of the outdoor unit
A2B2E port：Connect to the terminal serial port.
POWER port: Offer DC 5V
Reset button: Can reset to the original setting.
Network structure

Can control the unit and configuration the gateway through WEB function in the LAN
Can be connected to the BMS system through TCP/IP or RTU mode

Network example

1. One Modbus gateway can bridge one refrigerant system with a PC or the Modbus master
2. The PC system with the Modbus protocol port can communicate with CCM-18A through RTU or TCP/IP
method to control and monitor units. There are two methods for your reference.
Notes：
1. If it doesn’t monitor the ODU’s states, it can directly connect to the XYE ports of the indoor/outdoor units
in both ways above.
2.If it connects to XYE ports of master ODU, ODU must be set to auto addressing mode.
3. XYE and K1K2E must be connected hand by hand.
4. It supports two kinds of baud rates (600 and 4800) of the outdoor unit can be connected. Baud rate is
600: V4 Plus and D4 plus series; and baud rate is 4800: V4 and D3 series.
5.One Modbus gateway can bridge one refrigerant system with a PC or the BMS system (Modbus master).
6.When the baud rate of the outdoor unit is 600, can be connected up to 64 indoor units and 4 outdoor
units.
7. When the baud rate of the outdoor unit is 4800, can be connected up to 60 indoor units (indoor address
must be from 4 to 63) and 4 outdoor units.
8. The addresses of accessed indoor/outdoor units can't repeat; 4 outdoor units must be in the same