Communications Overview; Communications Settings - KEP MMI-1500 Installation & Operation Manual

15.0 Communications Overview

A programming cable is provided with each unit. In addition to this cable, a cable is needed to connect the HMI to your
Controller (PLC). This section provides pin out diagrams so that you can make your own cable. In some cases, a ready
made 6' (2m) cable is available. The available cables have their part number listed with the wiring diagrams.

15.1 Communications settings

Once the cable is made and the HMI is connected to the PLC communications can begin. It is up to the programmer to make
sure the settings in the PLC are correct and that they match the settings in the MMI. The HMI settings are made through the
EasyBuilder Software. Run EasyBuilder, open or start a new project and go to the Edit|System Parameters... Menu
selection.
Select the PLC type from the drop down menu.
If the PLC type is not shown, consult the
factory for availability. Make the appropriate
selections for your particular situation.
Serial I/F port: Selects the type of
communications and thus the HMI port to which
the PLC is connected.
Baud rate: Communication speed, this must
match the PLC setting.
Data bits, Stop bits, Parity: Communications
attributes that also must match the PLC
settings.
Parameter 1 ~ 6: Set additional parameters
according to PLC type specification sheets.
HMI station No.: The ID number of the HMI
when used with PLCs that allow multiple
devices connected to its port.
PLC station No.: The ID number of the PLC.
Used when multiple PLCs have the capability to
be on line with other devices.
Multiple HMI: Allows more than one HMI to be
connected to one PLC. Enable as a Master or a
Slave, depending on connection, or Disable as
needed.
HMI-HMI link speed: This is used only when
multiple HMIs are connected to a single PLC.
Faster link speeds may increase screen updates but it is affected by distance of link and electrical interference.
Note: All linked MMI's must be set to the same speed. When an HMI is set as "slave", it ignores the communication
parameters connected with the PLC (Serial port I/F, Baud rate, etc.).
Connect I/F: Select the unit to unit connection type. Ethernet is available for units with the optional Ethernet port. For all
others, use the Serial interface (I/F) selection.
200