IN4 W-axis latch

IN12 H-axis latch

Note: To insure a position capture within 25 microseconds, the input signal must be a transition from high to low.

The DMC-1700/1800 software commands, AL and RL, are used to arm the latch and report the latched position. The steps to use the latch are as follows:

1.Give the AL XYZW command or ABCDEFGH for DMC-1780 or DMC-1880, to arm the latch for the main encoder and ALSXSYSZSW for the auxiliary encoders.

2.Test to see if the latch has occurred (Input goes low) by using the _AL X or Y or Z or W command. Example, V1=_ALX returns the state of the X latch into V1. V1 is 1 if the latch has not occurred.

3.After the latch has occurred, read the captured position with the RL XYZW command or _RL XYZW.

Note: The latch must be re-armed after each latching event.

Example:

#Latch

Latch program

JG,5000

Jog Y

BG Y

Begin motion on Y axis

AL Y

Arm Latch for Y axis

#Wait

#Wait label for loop

JP #Wait,_ALY=1

Jump to #Wait label if latch has not occurred

Result=_RLY

Set value of variable ‘Result’ equal to the report position of y axis

Result=

Print result

EN

End

Fast Update Rate Mode

The DMC-1700/1800 can operate with much faster servo update rates. This mode is known as ‘fast mode’ and allows the controller to operate with the following update rates:

DMC-1710 or DMC-1810

125 usec

DMC-1720 or DMC-1820

125 usec

DMC-1730 or DMC-1830

250 usec

DMC-1740 or DMC-1840

250 usec

DMC-1750 or DMC-1850

375 usec

DMC-1760 or DMC-1860

375 usec

DMC-1770 or DMC-1870

500 usec

DMC-1780 or DMC-1880

500 usec

In order to run the DMC-1700/1800 motion controller in fast mode, the fast firmware must be uploaded. This can be done through the Galil terminal software such as DMCTERM and WSDK. The fast firmware is included with the original DMC-1700 or DMC-1800 utilities.

In order to set the desired update rates, use the command TM.

When the controller is operating with the fast firmware, the following functions are disabled:

Gearing mode

Ecam mode

DMC-1700/1800

Chapter 6 Programming Motion • 133

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Galil DMC-1700, DMC-1800 user manual Fast Update Rate Mode, Al Y
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DMC-1800, DMC-1700 specifications

The Galil DMC-1700 and DMC-1800 are advanced motion controllers widely recognized for their high performance and versatility in the automation and robotics industries. These controllers are designed to meet the demands of complex motion control applications, providing users with enhanced features and innovative technologies that optimize motion precision and efficiency.

One of the main features of the Galil DMC-1700 is its ability to handle up to 8 axes of motion control. This capability makes it suitable for a range of applications, from simple point-to-point movements to intricate trajectories in multi-axis systems. In contrast, the DMC-1800 extends this functionality, supporting up to 64 axes, making it ideal for large-scale automation environments.

Both models leverage Galil's powerful programming interface, which simplifies the development of motion control applications. The DMC-1700 and DMC-1800 controllers utilize a high-level programming language that supports advanced motion commands, including linear interpolation, circular interpolation, and complex motion profiles. This feature allows users to implement sophisticated motion sequences seamlessly.

In terms of connectivity, the Galil DMC series offers multiple communication options, including Ethernet, RS-232, and CAN bus, ensuring compatibility with various hardware and enabling easy integration into existing systems. The controllers also come equipped with digital and analog I/O ports, providing flexibility for sensor feedback and actuator control.

The advanced technology incorporated into both the DMC-1700 and DMC-1800 includes on-board PID control, which ensures precise motion control through closed-loop feedback. This results in improved stability and accuracy, particularly in high-speed applications. Additionally, the controllers offer extensive diagnostics and monitoring capabilities, allowing for real-time performance analysis and troubleshooting.

Another notable characteristic of these motion controllers is their compact design, which offers space-saving advantages while maintaining high processing power. Their robust construction and ability to operate in challenging environments make them suitable for a wide range of industrial applications, from CNC machining to assembly lines.

In conclusion, the Galil DMC-1700 and DMC-1800 motion controllers stand out due to their high-performance capabilities, advanced programming features, and flexibility in connectivity. With their ability to handle complex motion control tasks efficiently, these controllers are invaluable tools for engineers and manufacturers looking to enhance their automation processes. By integrating Galil's innovative motion control technology, industries can achieve greater precision, speed, and reliability in their operational workflows.
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