A-B 1746-HSRV Overview of the SLC Servo Module

SLC Servo Module Overview

The SLC Servo Module (catalog number 1746-HSRV) is compatible 

with the SLC 500 family and only used with SLC 5/03™ FRN 5.0, SLC 

5/04™, or SLC 5/05™ SLC Servo Modules. The SLC Servo Module is 

programmed for incremental, absolute or speed moves, depending on 

the application.

IMPORTANT

Place the SLC Servo Module as close to the SLC processor as possible

SLC Servo Module Operation

The SLC Servo Module, compatible with the SLC family, is used with 

SLC 5/03 FRN 5.0 (and above) processors using RSLogix 500, AI500 or 

APS (version 5.0 or higher) software. Once the SLC processor is 

initiated, the execution of the motion block is independent of the scan 

time of the processor. Blended motion allows for complicated move 

profiles consisting of two to thirty-two segments. The blended move 

profiles are stored in the SLC Servo Module’s memory as a series of 

absolute moves and can be executed more than once. Other move or 

homing operations can be performed between blended move profiles.

The SLC Servo Module controls absolute position over a range of 32 

bits. The SLC Servo Module performs an origin search (also called 

homing) and automatically resets the absolute position to the home 

position when the SLC processor requests a search function after 

detecting one of the following: 

• Encoder marker

• Limit switch

• Limit switch and marker

The SLC Servo Module operates in two modes:

• Configuration 

• Command 

When operating in the configuration or the command mode, the status 

of the module is reported to the SLC processor.

Configuration Mode Operation

You can enter configuration mode only if the system is in Estop. In the 

SLC Servo Module, you configure the SLC Servo Module by using M 

files containing data provided by the SLC 5/03 (or versions listed 

above) processors. All configuration parameters are internal to the SLC 

Servo Module and stored in non-battery backed RAM.

In configuration mode, you select the proper setup configuration to 

match the servo drive and motor without setting switches and without 

special software. If you do not set up your own configuration, the 

configuration is set to the default setting.

Command Mode Operation

Motor operations are performed in command mode. To operate in this 

mode, set the mode flag (bit 15 in output word 0) to 0. In the 

command mode, the SLC processor issues commands and activates 

the following operations or moves:

• Absolute moves 

• Incremental moves

• Speed moves

• Monitor moves

• Hold moves

• Unhold moves

• Blend moves

• Emergency stop operations

• Homing operations

• Preset operations

• Clear faults

• Alternate home moves