User Manual

TMCM-110-42 Manual 12

5.3.1 RS232

To connect the RS232 interface of a PC to the module you can use a extension cable or null modem cable

(twisted, with female plugs at both ends). The difference is shown in Table 5.1.

Null modem

Modem

Female (Host)

Female

Male

Signal

1 4 1

2 3 2 RxD

3 2 3 TxD

4 1 4

5 5 5 GND

6 6 6

7 8 7

8 7 8

9 9 9

Table 5.1: Rs-232 connection to PC

5.3.2 RS485

For RS485 communication we recommend to use our USB-2-485 converter for fast communication. This

converter switches to receive mode right after the last bit has been sent, without any delay. The pause time

can be set to 0. Please refer to [TMCL]. It is also equipped with an RS485 termination network. Not using the

USB-2-485 a pause time between commands and a termination network may be necessary.

The telegram pause time value is milliseconds ±5%. This time depends on the converter used. Converters

controlled by the RTS line need about 15ms, sometimes 25ms

An RS485 termination network (1k from RS485+ to +5V, 1k form RS485- to GND, 100R between RS485+ and

RS485-) may be necessary for faster communication and longer distances and is recommended in any case.

5.3.3 CAN

To use the TMCL IDE with CAN interface either the Trinamic CANnes card or the Trinamic USB2X interface is

needed. Otherwise an additional CAN termination of 120 Ohms between CAN high and CAN low (at both

ends of the cable) may be necessary.

5.3.4 IIC

To use the IIC interface with the TMCL IDE the Trinamic USB2X interface is needed.

5.4 Reference Switches

Two digital reference / stop switch inputs are provided (StopL= stop left and StopR = stop right). They are

used as an absolute position reference for homing and to set a hardware limit for the motion range. The

inputs have internal pullup resistors. Either opto-switches or mechanical switched with normally closed

contact can be used. The 5V output can be used as an supply for opto-switches.