User Manual

TMCM-110-42 Manual 8
Copyright © 2005-2007, TRINAMIC Motion Control GmbH & Co. KG
3.3.3 Connector 3: Additional I/O
All other inputs and outputs of the module can be connected here. These are the limit switches, a general
purpose input and a general purpose output. The limit switch inputs are equipped with internal pull-up
resistors, so they have to be connected to GND via normally closed switches. The general purpose input can
either be used as a digital TTL input or as an analogue input (0..5V). The general purpose output is an open
collector output for a maximum current of 100mA. A freewheeling diode is also included so that e.g. a relay
or a coil can be connected directly. Please note that the freewheeling diode is connected to the supply
voltage and not to +5V, so when using e.g. a relay that is connected to +5V a freewheeling diode must be
connected externally.
The pin assignment of this connector is as follows:
Pin Name Function
1 StopL Left limit switch input (integrated 10K pullup to 5V)
2 StopR Left limit switch input (integrated 10K pullup to 5V)
3 GND Signal Ground
4
GPO General purpose output 0
(open collector, max. 100mA, max. 40V)
5 VDD VDD (same as connector 1, pin 2)
6 GND Signal Ground
7 GPI General purpose input (Analog / Digital)
8 +5V +5V DC output (max. 20mA)
Table 3.3: Connector 3
GPI
1k
µC
GND +5V
BC846
GPO
VDD
10k
Figure 3.3: Wiring scheme for GPO and GPI
Relais
max. V
S
GPO
+ 5V
GPO
150 Ω
L-793ID
C
E
A
C
max. V
S
GPO
optional
GPI
+ 5V
Pushbutton,
Switch,
Light barrier,
etc.
Figure 3.4: Examples for possible wirings for GPI and GPO
3.3.4 ISP Connector
The 6-way (2x3) header on the module is the connector for an Atmel ISP programmer which can be used to
program the CPU directly. This is to be done by Trinamic only. The ISP connector is not to be used by the
user. Always leave this connector open.