Specifications

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SLC 500 Programmable Controllers and I/O Modules
1746-HSTP1 Stepper Control Module
The 1746-HSTP1 Stepper Control module is a single-axis stepper controller. Operating with a variety of
SLC 500 processors, this single-slot module is capable of providing up to 250 KHz pulse train output for
micro-stepping applications.
Use this module for open-loop stepper applications with single-axis control requirements. The SLC’s data
table contains all the program and configuration information. The module also has the ability to interface
directly with a quadrature encoder to monitor position. The five LED’s on the front of the module allow you
to quickly determine module status and error conditions.
The module is programmed and commissioned using RSLogix 500 programming software. For a given
move profile, you program the distance, acceleration, deceleration, and velocity. With +5V or +15V
encoders that provide differential feedback, the module interfaces directly to accept position information.
Features
• Over ±8,000,000 counts of absolute positioning for accurate and precise positioning of a mechanism.
• Compatibility with translators requiring a pulse train/direction input or a CW/CCW pulse train input.
• Accepts position feedback from a single encoder for closed loop operation.
• Programmable modes of operation eliminates the need to set DIP switches.
• Five LEDs provide quick status information and troubleshooting help.
• Built-in loop back diagnostics permits monitoring of the pulse train commands.
Specifications
Description Specification
Inputs 5V dc differential encoder or 12/24V dc single ended auxiliary
Max. Input Frequency 250 KHz
Outputs Digital output for translator
Module Update Time 4 ms
Backplane Current draw 300 mA at 5V dc
1746-HSRV Servo Control Module
The 1746-HSRV Servo Control module is a single-axis, closed-loop servo controller. The single-slot module can be
operated with a variety of SLC 500 processors with block execution independent of the scan time of the processor.
The system is programmed with RSLogix 500 programming software since ladder logic controls all of the motion.
For fast and accurate control, the module monitors encoder feedback up to 300 KHz.
Complicated moves are accomplished using blended motion profiles stored in the module’s internal memory and
can be executed repeatedly. The profiles are stored as a series of absolute moves, and additional moves or
homing operations can be performed between blended moves. The module can automatically reset the absolute
position when an encoder marker pulse is detected.