Communication Ports
The LTMT main unit has the following kinds of communication ports:
-
EtherNet/IP communication port
-
Modbus RTU communication port
-
PROFIBUS DP communication port
Ethernet Communication Port
| NOTICE |
|---|
|
unauthorized ethernet port usage
Use only one Ethernet communication port at a time, even though both ports are functionally
identical.
Failure to follow these instructions can result in equipment damage.
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The LTMT main unit with EtherNet/IP or Modbus TCP/IP communication protocols is equipped with two RJ45 Ethernet communication ports on the front face. They follow the Ethernet interoperability standards. It allows star and point-to-point connections. The main physical characteristics of Ethernet ports are:
|
Image |
Connector |
Description |
|---|---|---|
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RJ45 connector |
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|
Shielded ground terminal |
For more information on wiring and connections, refer TeSys Tera Motor Management System EtherNet/IP Communication Guide - DOCA0258EN
Modbus RTU Communication Port
The LTMT main unit with Modbus RTU communication is connected to the Modbus field terminals by using a 4-terminal connector.
|
Image |
Terminals |
Description |
|---|---|---|
|
|
D0 |
Data – |
|
D1 |
Data + |
|
|
Shielded earth |
PROFIBUS DP Communication Port
The LTMT main unit with PROFIBUS DP communication can be connected in the PROFIBUS DP daisy chain using two different connectors. In the LTMT main unit, standard DB9 connector is used for conventional method for PROFIBUS DP network. It can be achieved, by looping terminal available for PROFIBUS DP connection.
The maximum data speed with the different connectors are mentioned below.
|
Image |
Connector |
Data speed |
|---|---|---|
|
|
D-type connector |
12 Mbits/s |
|
|
Terminal connector |
1.5 Mbits/s |
The PROFIBUS DP 4-terminal connector has the following pin assignments:
|
Terminal |
Signal |
Description |
|---|---|---|
| A | RD-/TD- | Negative data transmission (RD-/ RD-) |
| B | RD+/TD+ | Positive data transmission (RD+/ RD+) |
|
– |
Shielded earth |