Analog Inputs - Scanlab RTC 5 PC Interface Board Installation And Operation Manual

For programming the stepper motor signals, see
chapter 9.1.5 "Stepper Motor Control", page
®
RTC 5 PC Interface Board
Rev. 1.9 e
4 Layout and Interfaces

4.4.8 Analog Inputs

205.
®
When the RTC 5 PC interface board is equipped with
®
the RTC 5 ADC add-on board (product number
121126), two 10 V analog inputs become available
(ANALOG IN0 and ANALOG IN1).
The analog input values of the two inputs are auto-
matically (without any command call) converted in an
endless series (duration approx. 0.3 ms) and trans-
ferred to the DSP as 12-bit digital values (I²C bus with
400 kHz, fast mode).
The current input values can be read via the control
command read_analog_in
Installation and Pinout
The ADC add-on board must be plugged into the
®
RTC 5 board's "SPI / I2C" and "RS232" headers.
When installing, ensure that the add-on board is
correctly oriented (see
ribbon cable must point outward.
Internally, the ADC add-on board is only electrically
connected to pins 1, 2, 9 and 10 of the "SPI / I2C"
header. Attachment to the "RS232" header is only for
mechanical stability.
MARKING ON THE FLY
LASER
SCANHEAD
ID
®
RTC 5 with ADC add-on board
at any time (see below).
figure 24): the soldered-on flat
EXTENSION 1 EXTENSION 2
SLAVE
2. SCAN HEAD
STEPPER MOTOR
RS232 RS232
SPI / I2C
24
54