Wiring the RS-485 Modbus RTU terminal
Installing the Network Management Module – 12
1.
2.3.4 Four-wire networks
All four RS-485 network signals including T-, T+, R–, and R+ must be connected respectively to the terminal strip R-, R+, T-, T+.
2.3.5 Configuring the termination
If the INDGW card is the last device installed in the network chain or the length of the network cable is excessive, termination
needs to be enabled.
Termination is used to match impedance of a node to the impedance of the transmission line being used. When impedances are
mismatched, the transmitted signal is not completely absorbed by the load and a portion is reflected into the transmission line.
To enable the on-board termination resistor (120Ω):
Locate the termination switch that is located on the top of the Modbus Network Module.
Belden 9843-24AWG or equivalent cabling (3 twisted-pair shielded 120Ω cable with ground) is recommended.
No more than two termination points should be used in the RS-485 network.
Summary of Contents for INDGW-M2
Page 1: ...UPS Industrial Gateway Card INDGW M2 User s Guide English 06 25 2021 2 1 5 ...
Page 2: ......
Page 24: ...Configuring Modbus Installing the Network Management Module 24 ...
Page 25: ...Configuring Modbus Installing the Network Management Module 25 ...
Page 26: ...Configuring Modbus Installing the Network Management Module 26 ...
Page 38: ...Home Contextual help of the web interface 38 3 2 7 1 3 Battery mode 3 2 7 1 4 Off mode ...
Page 40: ...Home Contextual help of the web interface 40 3 2 7 2 3 Battery mode 3 2 7 2 4 Off mode ...
Page 42: ...Home Contextual help of the web interface 42 3 2 7 3 2 Bypass mode 3 2 7 3 3 Battery mode ...
Page 63: ...Protection Contextual help of the web interface 63 3 5 4 1 Shutdown on power outage criteria ...
Page 65: ...Protection Contextual help of the web interface 65 Example 2 Immediate OFF ...
Page 66: ...Protection Contextual help of the web interface 66 Example 4 Custom Settings 1 ...
Page 268: ...Acronyms and abbreviations Information 268 ...
Page 276: ......