TMCM-342 Manual V1.01
11/26
Copyright © 2008, TRINAMIC Motion Control GmbH & Co. KG
Pin 66: RS232_RxD
Pin 68: RS232_TxD
Pin 2
Pin 1
Pin61: GND
TMCM-342
68-Pin-Connector
Host
TxD
RxD
GND
level shifter
(e.g. MAX202)
TTL
Figure 5.3: Connecting RS-232
5.3.3
RS-485
Pin Number
Direction
Name
Limits
Description
64
Out
RS485_DIR
TTL
Driver / Receiver enable for RS-485 Transceiver.
0: Receiver enable
1: Driver enable
66
In
RxD
TTL
RS-485 Receive Data
68
Out
TxD
TTL
RS-485 Transmit Data
2, 4, 6, 8, 10
In
GND
0V
Connect to ground
Table 5.4: Pinout for RS-485 Connection
Note: The TMCM-342 module only provides TTL level signals. For using RS485 a suitable RS485
tansceiver (like MAX485) has to be added by the user.
Pin 61: GND
TxD
RxD
DIR
RS485+
RS485-
GND
TxD
RxD
DIR
RS485+
RS485-
GND
Transceiver,
e.g. MAX485
Transceiver,
e.g. MAX485
Pin 64: RS485_DIRECTION
Pin 66: RS232_RxD
Pin 68: RS232_TxD
Pin 2
Pin 1
TMCM-342
68-Pin-Connector
TxD
RxD
DIR
GND
HOST
Figure 5.4: Connecting the RS-485 interface
Via RS-485 Interface it is possible to build up systems with of 31 (with repeater 254) modules, which
are addressable by one host.