MAN0964-13-EN_XL4_UM
A u g u s t 6 , 2 0 2 1 P a g e 86 | 194
CHAPTER 9: HIGH SPEED I/O (HSC / PWM)
9.1 Overview
In addition to the compliment of simple analog and digital I/O, several of the XL4 OCS I/O
modules support High Speed Counting (HSC) I/O functions and may also support Pulse Width
Modulation (PWM) Output functions (non-relay modules). The HSC functions include internal
timing, frequency, totalizing, pulse width/period, and quadrature measurement. The PWM
functions include traditional PWM (with variable rate and duty cycle) and a stepper (limited
functionality) with variable acceleration and deceleration rates. To determine function
availability, refer to the associated model’s Specification/Installation sheet (Digital DC
Input/Output sections).
The OCS contains a Field-Programmable Gate Array (FPGA), which is an integrated
configurable circuit that allows the XL4 to be programmed to have either two high-speed
counters or four high-speed counters. The XL4 ships with two high-speed counters, but a
customer can contact Horner Technical Support to receive a file that will configure the unit to
have four. These modes are not supported simultaneously. Two-counter mode supports
quadrature mode and two stepper outputs, while four-counter mode does not support
quadrature mode and supports only one stepper output.
This chapter describes the operation of these high-level I/O functions. For configuration
details of these functions, see Cscape Configuration.
To Next Page
Loading...
