Kontron Micro Client 3 104 - Manual (Page 29)

7. Product Description Micro Client 3 – User’s Guide (Version 1.0)
7.3. Optional Interfaces
The optional interfaces (Fig. 25, Fig. 26 pos. 7 and Fig. 30, Fig. 31, pos. 8) shown as CAN-BUS for MC 3 104 and as
RS422/485 interface for MC 3 121/150/170 and MC 3W 156 systems must be custom ordered. Depending on your
requirements, you can choose the type of the optional interface/s: RS232, RS422/485, RS422/485 isolated 1.5kV
CANopen, PROFIBUS, LPCtoCAN(SJA1000) adapter and Real Ethernet.
For MC 3 104 systems:
The optional interface locations (Fig. 25, pos. 7 and Fig. 30, pos. 8) can be fitted with:
 up to two different interfaces: RS422/485 and/or CANopen, PROFIBUS
CANopen, PROFIBUS and/or RS232 and/or LPCtoCAN
or only Real ethernet
For MC 3 121/150/170/ and MC 3W 156 systems:
The optional interface locations (Fig. 26 pos. 7 and Fig. 31, pos. 8)can be fitted with:
 up to three different interfaces: RS422/485 and/or CANopen, PROFIBUS
CANopen, PROFIBUS and/or RS232 and/or LPCtoCAN
or only Real ethernet
7.3.1. RS422/RS485 Serial Interface Connector/s
If one of the optional interfaces of your system is an RS422/485 serial interface (Fig. 19, Fig. 20 , Fig. 25 and Fig. 26 pos. 1)
it is available as 9-pin D-SUB connector (female). The interface can be configured via an on-board DIP switch (SW1) for
RS422 or RS485 serial communication.
The optional settings (SW1) for RS485 mode communication allow the system’s operation either in full duplex mode or in
half duplex mode (see tables on the next page). While running in RS485 half duplex mode the system stays permanently in
a receiver mode. The switch to transmission mode will be done automatically. The user can determine if the automatic
mode switch to transmission mode should be triggered by the RTS-line or should be triggered by the last sent message
using the TxD line.
If triggered by RTS has been selected, then the RTS-signal must be activated by the application software before
transmission of the data packets starts; and RTS signal has to be disabled again after termination of data transmission.
If TxD line will be used for the mode transceiver switch process, the receiver device has to follow a timeout before starting
to send any data.
Fig. 27: Onboard DIP-Switch (SW1) with DP1 up to DP8 for RS422/RS485 serial communication settings
In order to configure this interface for serial communication (as RS422 or RS485) corresponding to your requirements, set
the switches of the DIP switch (SW1) to “ON” or “OFF” (factory settings are marked grey). For accessing the DIP switch refer
to the procedure described in the chapter 7.9.1 “Configuration of the RS422/RS485 Port”.
Serial Communication Type Transmitting<->receiving SW1 Settings
DIP1 DIP2 DIP3
RS422 4-Channel Mode - OFF OFF OFF
RS485 4-Wire Mode (Bus-Master) - ON OFF ON
RS485 2-Wire Mode RTS ON ON ON
RS485 2-Wire Mode Timeout ON ON OFF
Table 1: DIP1, DIP2 and DIP3 settings for serial communication type
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