Datasheet

Used signals
Signal Pin
name name Signal type Function
A_x Ax +/- Diff./TTL/24 V* Trace A of the incremental encoder (32-bit) or
Trace A of the incremental encoder 0 (16-bit)
B_x Bx +/- Diff./TTL/24 V* Trace B of the incremental encoder (32-bit) or
Trace B of the incremental encoder 0 (16-bit)
INDEX_x Cx +/- Diff./TTL/24 V* Index trace of the incremental encoder (32-bit)
C_x Cx +/- Diff./TTL/24 V* Trace A of the incremental encoder 1 (2x16-bit)
UAS_x Dx +/- Diff./TTL/24 V* Error signal input (32-bit)
D_x Dx +/- Diff./TTL/24 V* B signal of the incremental encoder 1 (2x16-bit)
REF_x Ex 24 V / optional 5 V Digital input
(can also control the reference point logic)
ExtStrb_a_x Fx 24 V / optional 5 V Digital input
Active High (can be used for the latch logic or interrupt logic)
ExtStrb_b_x Gx 24 V / optional 5 V Digital input
Active High (can be used for latch logic or interrupt logic)
DIG_OUT_x Hx 24 V / optional 5 V Digital output
Function Incremental counter
Function Synchronous serial interface (SSI)
The function module is programmed as a synchronous serial interface.
The SSI function is an interface for systems which an absolute
po sition output through serial data transfer.
Typical application examples:
Acquisition of displacement measurement systems•
Axis control (X, Y and Z)•
Tolerance measurement ...•
Mode
register
Output register
Input register 0
Output register 1
Input register 2
Digital I/O
SSI clock
SSI data 0
SSI data 2
SSI data 1
Up to 2 incremental encoders can be connected to a module programmed
with the function Incremental counter.
90° phase-shifted input signals (displacement measurement systems)•
Motion control•
Pulse width and frequency measurement•
Incremental encoder acquisition•
Tolerance measurement•
Velocity measurement•
Rotation measurement•
Electronic “mouse”•
Function range of the counter component
Simple, double, quadruple analysis of 2 phase-shifted clock signals (A, B) •
Direction detection for upwards or downwards counting•
Hysteresis circuit for the suppression of the rst pulse after a change in •
rotation; can be switched off
2 x 32-bit data latches, individually programmable for internal / external •
strobe, latch strobe synchronised with internal clock
Operating mode is dened by an internal mode register,
•
loadable and readable through the data bus
Strobe inputs which can be triggered either through 2 external pins
•
(24 V input) or by writing in a register
Interrupt indication triggered through the external strobe inputs
•
Compare logic, interrupt logic and reference point logic•
Properties
4 function modules for each board, up to 3 SSI sensors per function •
module
Optical isolation of the inputs and outputs through opto-couplers to
•
prevent ground loops
Serial data transfer
•
Common clock for all 3 sensor interfaces of one function module•
Clock frequency and number of data bits are software suitable•
GRAY to BINARY conversion possible•
For each function module, there are 3 digital inputs and 1 digital output •
for an additional function (no effect on SSI function)
The interface includes:
Three independent 32-bit SHIFT registers, which can be read •
through the data bus
Clock and pulse generator•
Function and control logic •
Used signals
Signal Pin
name name Signal type Function
Clock_x Ax +/- RS422 Clock output for the SSI sensors
DATA1_x Bx +/- RS422/TTL Data input of SSI sensor 0
DATA2_x Cx +/- RS422/TTL Data input of SSI sensor 1
DATA3_x Dx +/- RS422/TTL Data input of SSI sensor 2
Input1_x Ex 24 V / 5 V optional Digital input 0
Input2_x Fx 24 V / 5 V optional Digital input 1
Input3_x Gx 24 V / 5 V optional Digital input 2
Output_x Hx 24 V / 5 V optional Digital output
Block diagram SSI
x: Number of the function module (See pin assignment page 179)
* 24 V for the APCI-1710-24V
x: Number of the function module (See pin assignment page 179)
The SSI function cannot be programmed on the APCI-1710-24V.
Phone: [phone] info
@
addi-data.com
Fax: [phone] www.addi-data.com
180
PCI, counter – APCI-1710