Table of Contents
Advertisement
Quick Links
VDD
VDD33
VDD18
GND
© 2012 ESPROS Photonics Corporation
Characteristics subject to change without notice
Reference Manual
epc100
epc101
2-wire COM
2-wire COM
Interface
Interface
Processor
SPI
Controller
SI
CS
EN
Reference Manual epc10x
Parameter
Memory
Signal
Processor
f
SO
Page 1/26
V
LED
LED
SCK
LED
PD
D1
Reference Manual epc100 - V2.2
Advertisement
Table of Contents
Related Manuals for ESPROS epc10 Series
Summary of Contents for ESPROS epc10 Series
- Page 1 Reference Manual epc10x Reference Manual epc100 epc101 2-wire COM 2-wire COM Parameter Interface Interface Memory VDD33 Processor VDD18 Signal Controller Processor © 2012 ESPROS Photonics Corporation Page 1/26 Reference Manual epc100 - V2.2 Characteristics subject to change without notice...
-
Page 2: Table Of Contents
8. Considerations for Safety Applications..................... 26 8.1 Data Integrity on the 2-Wire Power-Bus..............................26 8.2 Residual Error Rate..................................... 26 8.3 Error Cases........................................26 8.4 Error Codes........................................26 © 2012 ESPROS Photonics Corporation Page 2/26 Reference Manual epc100 - V2.2 Characteristics subject to change without notice... -
Page 3: Introduction
This Manual describes the various operation and programming modes in order to use Rx and interface chip epc100 and the Tx chip epc101. © 2012 ESPROS Photonics Corporation Page 3/26 Reference Manual epc100 - V2.2 Characteristics subject to change without notice... -
Page 4: Light Curtain Principle
➑ ➒ ➓ epc101 with LED Tx edge Rx edge epc100 with PD Bus Termination 50Ω, 100nF Figure 1: Light curtain principle © 2012 ESPROS Photonics Corporation Page 4/26 Reference Manual epc100 - V2.2 Characteristics subject to change without notice... - Page 5 3 The spacing between the individual elements of a light curtain is also called 'grid spacing' and is typically in a range of a few millimeters up to hundreds of millimeters. © 2012 ESPROS Photonics Corporation Page 5/26 Reference Manual epc100 - V2.2...
-
Page 6: Light Curtain Receiver Edge
File: This document is confidential and protected by law and international trades. It must not be shown to any third party nor be copied in any form without our written permission © 2012 ESPROS Photonics Corporation Page 6/26 Reference Manual epc100 - V2.2... -
Page 7: Wire Bus
It is strongly recommended to do that during type qualification during EMI qualification tests. 5 The effective length is dependent on the electro-mechanical design of the edge. The values in the table are indicative only. © 2012 ESPROS Photonics Corporation Page 7/26 Reference Manual epc100 - V2.2... -
Page 8: Bus Wire Considerations
The interface device has to be placed near the L/R circuit (<1m). 100nF Figure 7: Bus termination network © 2012 ESPROS Photonics Corporation Page 8/26 Reference Manual epc100 - V2.2 Characteristics subject to change without notice... -
Page 9: Bus Signal Waveform
Make sure that the voltage swing VS is in the given tolerance range at every physical location of the bus. Due to reflections in the cable, losses of the wires (capacitive, inductive, and resistive), and the high bandwidth of the communication signals, significant differences can occur. © 2012 ESPROS Photonics Corporation Page 9/26 Reference Manual epc100 - V2.2... -
Page 10: Parameter Memory
6 The non-volatile memory is a one-time-programmable memory (OTP). Once the memory is programmed, the programmed values cannot be overwritten anymore! This memory type is hereinafter called ROM. 7 Hereinafter called RAM. © 2012 ESPROS Photonics Corporation Page 10/26 Reference Manual epc100 - V2.2... -
Page 11: Receiver Parameters (Epc100)
Set to “1” in the final product to avoid accidentally overwriting of the contents of the RAM registers. Table 3: epc100 Registers 0 and 16 © 2012 ESPROS Photonics Corporation Page 11/26 Reference Manual epc100 - V2.2 Characteristics subject to change without notice... - Page 12 Settling time delay from inactive to active mode. Values Default Comments If T >=60μs SCAN If T <60μs SCAN Table 5: epc100 Registers 2 and 18 © 2012 ESPROS Photonics Corporation Page 12/26 Reference Manual epc100 - V2.2 Characteristics subject to change without notice...
-
Page 13: Sample Receiver Parameter Setting
ROM RAM don't use don't use don't use Address don't use Chip ID Figure 11: Sample parameter setting for a high speed receiver © 2012 ESPROS Photonics Corporation Page 13/26 Reference Manual epc100 - V2.2 Characteristics subject to change without notice... -
Page 14: Transmitter Parameters (Epc101)
“on the fly” in dynamic systems. Set to “1” in the final product to avoid accidentally overwriting of the contents of the RAM registers. Table 7: epc101 Registers 0 and 16 © 2012 ESPROS Photonics Corporation Page 14/26 Reference Manual epc100 - V2.2... - Page 15 Settling time delay from inactive to active mode. 15 14 13 Values Default Comments If T >=60μs SCAN If T <60μs SCAN Table 9: epc101 Registers 2 and 18 © 2012 ESPROS Photonics Corporation Page 15/26 Reference Manual epc100 - V2.2 Characteristics subject to change without notice...
-
Page 16: Sample Transmitter Parameter Setting
ROM RAM don't use don't use don't use Address don't use Chip ID Figure 12: Sample parameter setting for a high speed transmitter © 2012 ESPROS Photonics Corporation Page 16/26 Reference Manual epc100 - V2.2 Characteristics subject to change without notice... -
Page 17: Timing
The whole operation is optimized for shortest possible scan periods by operating two or more Rx or Tx elements in parallel. Figure 14 shows the timing for a settling time of one scan period (TSET=0) and the addresses given in the shortest possible sequence. © 2012 ESPROS Photonics Corporation Page 17/26 Reference Manual epc100 - V2.2... -
Page 18: Special Cases
If a device detects a command during a scan operation which is not the command SCAN, it is put into standby mode. • A SCAN command with address 0 can be used to fetch the results without starting a new scan command. © 2012 ESPROS Photonics Corporation Page 18/26 Reference Manual epc100 - V2.2... -
Page 19: Spi Interface
(a “0”) or the the chips on the 2-wire bus (a ”1”). Data Register Address or Cmd Extension Command Figure 16: Communication to the interface device (Direct Command) © 2012 ESPROS Photonics Corporation Page 19/26 Reference Manual epc100 - V2.2 Characteristics subject to change without notice... -
Page 20: Command List
The READ and WRITE commands in the direct access mode require 2 additional SCK cycles. Page Part Name Part No. <Partname> <x000 000> File: © 2012 ESPROS Photonics Corporation Page 20/26 Reference Manual epc100 - V2.2 Characteristics subject to change without notice... -
Page 21: Detailed Command Descriptions
DC sunlight influence to check the proper functionality of the receiver(s) without using an emitter. This mode is initialized by the command TEST and is left after a complete SCAN sequence. © 2012 ESPROS Photonics Corporation Page 21/26 Reference Manual epc100 - V2.2... - Page 22 It is only possible to write to registers if the corresponding register in the ROM has not been written yet. It is not possible to write directly to a ROM register. If the data has to be stored into the ROM register, a subsequent command PROG has to be used. © 2012 ESPROS Photonics Corporation Page 22/26 Reference Manual epc100 - V2.2...
- Page 23 By holding the CS line to 0 it is possible to trigger on a positive edge of SO. • If more clock toggles SCK are issued than data can be fetched, zeros are transmitted. © 2012 ESPROS Photonics Corporation Page 23/26 Reference Manual epc100 - V2.2...
-
Page 24: Address Programming
“0” for SOFF. Check The parameters should be checked by reading them back from each device using the READ parameters command. © 2012 ESPROS Photonics Corporation Page 24/26 Reference Manual epc100 - V2.2 Characteristics subject to change without notice... -
Page 25: Programming Procedure
• After programming a register, bit no. 0 of this register becomes automatically a one to indicate that the register is programmed. © 2012 ESPROS Photonics Corporation Page 25/26 Reference Manual epc100 - V2.2 Characteristics subject to change without notice... -
Page 26: Considerations For Safety Applications
Return telegram not complete Error handling procedure 0100 Table 15: Error states *) The last three error bits contain the number of detected errors. © 2012 ESPROS Photonics Corporation Page 26/26 Reference Manual epc100 - V2.2 Characteristics subject to change without notice ...
Need help?
Do you have a question about the epc10 Series and is the answer not in the manual?
Questions and answers