Hardware I/O, Digital Outputs | Galil DMC-1800, DMC-1700 guide

All input parameters must be converted into these units. For example, an operator can be prompted to input a number in revolutions. A program could be used such that the input number is converted into counts by multiplying

it by the number of counts/revolution.

Example:

#RUN	Label
IN “ENTER # OF REVOLUTIONS”,N1	Prompt for revs
PR N1*2000	Convert to counts
IN “ENTER SPEED IN RPM”,S1	Prompt for RPMs
SP S1*2000/60	Convert to counts/sec
IN “ENTER ACCEL IN RAD/SEC2”,A1	Prompt for ACCEL
AC A12000/(23.14)	Convert to counts/sec2
BG	Begin motion
EN	End program

Hardware I/O

Digital Outputs

The DMC-1700/1800 has an 8-bit uncommitted output port for controlling external events. The DMC-1750 through DMC-1780 or DMC-1850 through DMC-1880 have an additional 8 outputs. [The DMC-17X8 has an additional 64 I/O (configured as inputs or outputs with CO command)]. Each bit on the output port may be set and cleared with the software instructions SB (Set Bit) and CB(Clear Bit), or OB (define output bit).

For example:

INSTRUCTION	FUNCTION
SB6	Sets bit 6 of output port
CB4	Clears bit 4 of output port

The Output Bit (OB) instruction is useful for setting or clearing outputs depending on the value of a variable, array, input or expression. Any non-zero value results in a set bit.

INSTRUCTION	FUNCTION
OB1, POS	Set Output 1 if the variable POS is non-zero. Clear Output 1 if POS equals 0.
OB 2, @IN [1]	Set Output 2 if Input 1 is high. If Input 1 is low, clear Output 2.
OB 3, (@IN [1]&@IN [2]) Set Output 3 only if Input 1 and Input 2 are high.
OB 4, COUNT [1]	Set Output 4 if element 1 in the array COUNT is non-zero.

The output port can be set by specifying an 8-bit word using the instruction OP (Output Port). This instruction

allows a single command to define the state of the entire 8-bit output port, where 20 is output 1, 21 is output 2 and so on. A 1 designates that the output is on.

For example:

INSTRUCTION FUNCTION

OP6

OP0 OP 255

Sets outputs 2 and 3 of output port to high. All other bits are 0. (21 + 22 = 6) Clears all bits of output port to zero

Sets all bits of output port to one.

(22 + 21 + 22 + 23 + 24 + 25 + 26 + 27)

The output port is useful for setting relays or controlling external switches and events during a motion sequence.

166 • Chapter 7 Application Programming

DMC-1700/1800

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.

Galil DMC-1800, DMC-1700 user manual Hardware I/O, Digital Outputs

Models: DMC-1800 DMC-1700

Example:

Hardware I/O

Digital Outputs

OB1, POS

OP6

DMC-1800, DMC-1700 specifications