SMAR MB-700, User Manual

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Chapter 6
6.1
SCENARIOS
The following scenarios presented here use the Smar’s LC700 as an example of MODUS RTU
slave device, however, the MB-700 may be used with any MODBUS RTU slave device.
Multiple Masters TCP/IP Communicating Directly with Several LC700s,
including via Radio
Figure 6.1 – MB-700 Application Example as MODBUS Gateway (Serial Master)
In this application, the MB-700 supports the following simultaneous functionality:
9
CONF700 downloads/uploads via TCP/IP including remotely
9
Supervision of the LC700 via OPC and/or Modbus TCP/IP driver
9
Firmware download of the LC700 via TCP/IP including remotely
The MB-700 is connected to the corporate network through its Ethernet port. In the network is
connected the workstation to configure and monitor the slave devices. Serial ports EIA-232 and EIA-
485 allow 3 LC700 to be connected to the MB-700. Two of the controllers are connected through the
EIA-485 bus and a third one is connected through a radio link. This last one is a remote unit
because its physical location is far from the MB-700 master. The first LC700 has Modbus ID=2 and
the second ID= 4 and the remote LC700 has ID= 5.
The MB-700 has an IP address within the Ethernet. So the configuration and supervision tools might
“see” the MB-700 in this network. In the CCCF block communication parameters are set, like
TIMEOUT, BAUDRATE, BYPASS_DIRECTION (TCP to Serial), PARITY and
NUMBER_RETRANSMISSIONS.