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Mesa 7I76 - User Manual

Mesa 7I76
58 pages
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7I76 STEP/DIR PLUS I/O DAUGHTERCARD
V1.22

Table of Contents

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Summary

General Overview

Description of 7176 Daughtercard

Details the 7176 daughtercard/breakout board, its interfacing capabilities, step/dir outputs, analog spindle control, and isolated I/O.

Hardware Configuration

Connectors

P1 Host Interface Connector

Details the DB25F connector for the FPGA card, including pin functions and signal directions.

TB2 Step and DIR Connector

Pinout and description of the TB2 connector for step and direction outputs.

TB3 Step;Dir, Encoder and RS-422 Connector

Pinout for TB3 connector, carrying step/dir channel 4, encoder, RS-422, and power supply.

TB4 Spindle Connector

Pinout for TB4 connector, used for spindle drive interface with analog output and control signals.

Field Input;Output Connectors (TB6)

Details terminal block TB6 for field input and output connections.

Field Input;Output Connectors (TB5)

Details terminal block TB5 for field input and output connections.

Field Power Connector

Pinout and function of TB1, the field power connector.

Operation Modes

Host Interface Operation

Explains the 7176's operation with FPGA cards and its support for various interfaces.

Step;Dir Interface

Details the five channels of step/dir interface, buffered 5V differential signals, and connections for single-ended inputs.

Encoder Interface

Details the one-channel encoder interface, its programming for differential/single-ended, and 5V power output.

Spindle Interface

Explains the analog output for spindle control, its function as a potentiometer replacement, and voltage requirements.

Field I;O Overview

Overview of the 32 input/16 output isolated field I/O system for DC control systems.

VIN and Field Power Supply

Explains power sources for field I/O (5-32 VDC) and VIN requirements (min 8V).

Field Output Characteristics

Details sourcing type MOSFET drivers for field outputs, 24V capability, and 350mA maximum load.

Reference Information

Normal Mode Operation Sequence

Details the NORMAL MODE OPERATION sequence for cyclic access with write-before-read.

LBP Protocol Overview

Explains the LBP protocol, command header, data read/write command structure, and examples.

Specifications

General and Field I;O Specifications

Lists specifications for general, step/dir outputs, field I/O, and high-speed encoder input.

Mesa 7I76 Specifications

General IconGeneral
BrandMesa
Model7I76
CategoryI/O Systems
LanguageEnglish

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