Tech-note
tn202-2.doc - 10.01.2012
ePALM10 Product Manual
15
TCM01 Siemens Simatic S7 MPI Suitable for a point-to-point configuration at the speed
of 187 Kb
TCM02
Moeller Suconet K
Suitable for a point-to-point configuration at the
maximum speed of 375 Kb
TCM03
DeviceNet
There are limitations in the bus speed and network
configuration that can be used
TCM09 CANopen There are limitations in the bus speed and network
configuration that can be used
Other TCM modules are currently not supported for use in these versions of the ePALM product.
The following notes are important:
• The TCM module must be plugged into the unit in the slot available for this purpose. The ePALM
must be opened to allow for the insertion of the TCM module. After plugging the module the
ePALM product must be carefully closed to ensure proper sealing.
• The default wiring of the Aux Port CN1 must be manually changed to connect the appropriate
signals. Fieldbus topologies do not allow long (5-10 meters) drop segments; the wiring must
include incoming and outgoing segments for all bus signals.
• The CA01 interface board does not allow adding terminator resistors to the bus lines. The ePALM
cannot be used a final node in the network topology unless termination resistors are applied
externally.
The most common wiring layouts will be described in detail in this chapter.
4.1.2 Connecting the ePALM to the Simatic S7 MPI network
It is recommended that the signals needed for this connection be moved from the CN3 connector
(PLC Port) to the CN1 connector (Aux Port) as shown in the table below.
The table indicates the wires that must be moved from CN3 to CN1. The signals A and B will have to
be connected to the MPI network.
Please note that it is not possible to connect the termination resistors in the ePALM.
Wires to be removed
4 A Blue-Red 1 CHA+
5 B Blue-Black 2 CHA-
1 GND Black 6 GND
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