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4.6

COMMUNICATING WITH THE CARRIER AND M-MODULES

The EM405-8 implements two protocols for transferring commands and  data over the Ethernet
bus.    The  VXI-11  protocol  is  the  default  method  of  communication.    It  is  always  enabled  and
always  active.    VXI-11  uses  the  ONC  Remote  Procedure  Call  (RPC)  model  for  defining
instrument  messages.    The  host-side  software  must  also  implement  VXI-11  to  perform
communication.    Most  VISA  I/O  implementations  implement  the  VXI-11  protocol  for  TCPIP
INSTR  resource  types.    Alternatively,  raw  socket  communication  can  be  enabled  and  used  for
communications.    By  default,  raw  socket  communication  is  disabled.    In  raw  socket
communication,  the  messages  and  data  are  passed  directly  within  the  TCP  protocol  layer  and
therefore special protocols are not required.

Regardless of the encapsulating protocol, the messages and data that the EM405-8 uses is based
on  a  simple  binary  command  structure.    The  commands  allow  the  user  to  either  write  or  read
registers  residing  on  the  EM405-8  or  on  each  M-Module.    By  writing  registers  residing  on  the
EM405-8,  the  user  can  identify  the  module,  perform  device  configuration,  and  receive  status.
The registers residing on each M-Module are specific to the particular M-Module.  Refer to the
M-Module’s documentation for register details.

Each command consists of a command-id byte, a module number on which the command is to be
executed  and  parameters,  if  required.    The  commands  are  listed  in  Table  I.    Details  of  each
command are found throughout the rest of this section.

Table I. Command Summary

Binary
Command-id

Function

0x20

Write Data

0x30

Read Data

0x45

Block Write

0x55

Block Read

C&H Technologies, Inc. <> 445 Round Rock West Drive <> Round Rock, Texas 78681 <> www.chtech.com

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Содержание EM405-8

Страница 1: ... Part No 11029384 M O D E L E M 4 0 5 8 U S E R S M A N U A L E T H E R N E T M M O D U L E C A R R I E R L X I B R I D G E C H Technologies Inc 445 Round Rock West Drive Round Rock Texas 78681 www chtech com ...

Страница 2: ...n Copyright 2007 by C H Technologies Inc The information and or drawings set forth in this document and all rights in and to inventions disclosed herein which might be granted thereon disclosing or employing the materials methods techniques or apparatus described herein are the exclusive property of C H Technologies Inc A Reader s Comment Form is provided at the back of this publication If this fo...

Страница 3: ...n instrument changes are deemed necessary to equipment related documentation The latest revision of our documentation is available for download from our web site at http www chtech com NOTE The contents of any amendment may affect operation maintenance or calibration of the equipment C H Technologies Inc 445 Round Rock West Drive Round Rock Texas 78681 www chtech com ...

Страница 4: ...oftware drivers for an installed M Module may be provided by the M Module manufacturer Some drivers may require modification to operate correctly with the communication protocol and the addressing methodology used by the EM405 8 To support initial operation and application software development C H provides a software application called Interactive Mezzanine Control IMC The application provides imm...

Страница 5: ... 10 3 1 3 USB Interface 10 3 1 4 PCI to Local Bus Bridge 10 3 1 5 M Module Interface 10 3 1 6 Trigger Control 10 3 1 7 AC DC Converter 10 3 1 8 DC DC Converter 10 3 2 FRONT PANEL 11 3 3 REAR PANEL 12 4 0 OPERATING INSTRUCTIONS 13 4 1 GENERAL 13 4 2 DISCOVERY 13 4 3 WEB SERVER 13 4 4 CONFIGURING THE ETHERNET INTERFACE 14 4 4 1 TCP IP Mode 15 4 4 2 IP Address 16 4 4 3 Subnet Mask 16 4 4 4 Gateway 16...

Страница 6: ... 8 Ethernet M Module Carrier 1 Figure 2 M Module Configuration Diagram 7 Figure 3 M Module Installation 8 Figure 4 M Module Removal 8 Figure 5 Functional Block Diagram 9 Figure 6 Front Panel 11 Figure 7 Rear Panel 12 Figure 8 Web Home Page 14 Figure 9 Web LAN Configuration Page 15 Figure 10 Web Status Control Page 19 Figure 11 EM405 8 Registers 29 Figure 12 Trigger Logic Input Direction 37 Figure ...

Страница 7: ...n control and configuration of the carrier and M Modules For a complete list of M Modules compatible with the EM405 8 carrier visit the Support section on C H s website www chtech com Figure 1 EM405 8 Ethernet M Module Carrier 1 1 PURPOSE OF EQUIPMENT The EM405 easily interfaces a VITA 12 1996 standard M Module to a typical Ethernet network The carrier allows the numerous functions available in th...

Страница 8: ...rted 0001 version only Isolated and filtered 5V 12V and 12V supplies for each M Module Power off reset able breakers provided for each M Module position The triggers have currently not been approved as LXI compliant Use should be limited to non LXI applications 1 2 2 Specifications MAXIMUM RATINGS Parameter Condition Rating Units Operating Temperature 0 to 60 C Non Operating Temperature 40 to 75 C...

Страница 9: ...el into a high impedance load 3 8 5 0 5 4 V BNC Output Impedance 50 BNC Input Level TLVL 0 4 TLVL 1 2 5 1 4 V V BNC Input Impedance TIMP 0 4 TIMP 1 900K 1M 50 LVDS Differential Output Magnitude 480 650 mV LVDS Differential Input Type 1 receiver Threshold positive going Threshold negative going Hysteresis 50 25 50 mV mV mV Cooling Temperature Rise 20 C Temperature Accuracy 1 1 C Notes 1 Several mil...

Страница 10: ...les that exceed the ANSI VITA Std 12 1996 specification for power consumption however the total M Module power consumption is limited to 8A for the 5V supply and 1 6A each for the 12V supplies The ANSI specification allows a maximum of 1A for the 5V supply and 200mA each for the 12V supplies for a single M Module 1 4 Mechanical The EM405 8 is contained in a 19 inch rack mount 1U high metal chassis...

Страница 11: ...r 0FD916 The carrier also complies with the LXI Standard Rev 1 1 for a Class C Bridge instrument 1 7 APPLICABLE DOCUMENTS ANSI VITA 12 1996 American National Standard for The Mezzanine Concept M Module Specification Approved May 20 1997 VMEbus International Trade Association 7825 E Gelding Dr Suite 104 Scottsdale AZ 85260 3415 E mail info vita com www vita com IEEE 802 3 ANSI 8802 3 Ethernet Netwo...

Страница 12: ...dules first remove power from the carrier Remove the top cover by removing the six screws located on the top cover Do not remove the screws located on the front and rear connector panels There are eight M Module mounting locations on the EM405 8 as illustrated in Figure 2 Install the modules by firmly pressing the connector on the M Module together with the connector on the carrier as shown in Fig...

Страница 13: ...slowly loosen itself from the carrier header pins If the EM405 8 is completely full a pointed prying bar may be required to help remove the first module The point of the prying bar can be placed between the carrier header and the M Module to loosen the connection as shown in Figure 4 Figure 2 M Module Configuration Diagram FAN FAN FAN FAN FAN FAN FAN FAN INTERNAL ELECTRONICS DO NOT REMOVE COVER MO...

Страница 14: ...l Carrier M Module Install screws A B C M Module with two row connector shown Carrier M Module Remove screws Rock module side to side while prying Do NOT remove these screws C H Technologies Inc 445 Round Rock West Drive Round Rock Texas 78681 www chtech com ...

Страница 15: ...ecutes system firmware that controls the translation between Ethernet and the M Module interface The system firmware implements a simple command protocol that allows access to the M Modules I O space trigger mapping and carrier information and status ETHERNET EMBEDDED CONTROLLER M MODULE INTERFACE DC DC CONV 85 265VAC IN POSITION 7 M MODULE 7 TTL TRIGGERS OR 48VDC 10 100 BASE T POSITION 6 M MODULE...

Страница 16: ...ogic 3 1 5 M Module Interface The M Module interface provides the mechanism for the microcontroller to access the M Modules It is implemented using programmable logic that emulates a bridge between the microcontroller and the M Module bus 3 1 6 Trigger Control The trigger control logic provides control of the intermodule triggering the TTL Triggers and the LVDS triggers It is implemented using pro...

Страница 17: ...re are three LED indicators on the left side of the front panel The functions of these indicators are STATUS indicates a self test failure LAN indicates the status of the LAN interface Solid On Green Normal operation Flashing Green Device Identify Solid On Ready LAN Fault see list below PWR indicates that 48V internal power is present Potential LAN faults include 1 Failure to acquire a valid IP ad...

Страница 18: ...n to factory default values See section 4 4 7 for details A grounding stud nut is also provided for connection of the chassis to a suitable equipment ground Refer to Appendix A for pin out details of the LVDS and DC input power connectors Figure 7 Rear Panel LAN RST TOGGLE TO RESET AC INPUT TTL TRIGGERS LVDS TRIGGERS LAN 10 100 BASE T USB IN OUT DC INPUT POWER 36 75VDC 85 265AC 47 63Hz OVER CURREN...

Страница 19: ...very utilities are generally included with the VISA I O library package provided by several third party vendors The EM405 8 allows for one network link per installed M Module plus one network link for the carrier itself Therefore it is likely that the discovery utility will discover several instruments at the same IP address For example if the carrier is fully populated with 8 M Modules the device...

Страница 20: ...iguration link from the navigation menu found on the left side of all EM405 8 web pages A screenshot of the LAN Configuration page is shown in Figure 9 From this page the user can configure the IP configuration mode IP address subnet mask default gateway and the raw socket utility Each of these is discussed further in the following sections C H Technologies Inc 445 Round Rock West Drive Round Rock...

Страница 21: ...erver Otherwise DHCP will fail and the IP address of the EM405 8 will not be properly configured Auto IP Auto IP utilizes the Dynamic Link Local Addressing protocol to acquire an IP address When performing Auto IP configuration the device selects an IP address from a defined range of 169 254 0 0 to 168 254 255 255 It then performs an Address Resolution Protocol ARP query to determine if the select...

Страница 22: ...etworks to be separated into various subnets The EM405 8 should be in the same subnet as the controlling PC or router The default subnet mask is 255 255 255 0 4 4 4 Gateway The gateway address allows the EM405 8 to communicate with other network segments If communication outside of the given network segment is necessary the gateway address should be set to the IP address of the router connecting t...

Страница 23: ...id green to flashing The flashing LED indicates that the system firmware has recognized the reset condition Upon releasing the button the settings will be reset to factory defaults Unlike the Restore Defaults button the LAN reset switch will reset the password back to its default 4 4 8 Password A password is required to modify any of the network configurations Make sure the correct password is ent...

Страница 24: ...sides If the Automatic Refresh box is selected this web page will automatically refresh every 10 seconds 4 5 3 Fan Full On If the Fan Full On check box is selected the fans on the EM405 8 will run at full speed If the Fan Full On is not selected the fans will be set to run at a variable speed where the firmware constantly monitors the temperature and speeds up the fans if the temperature rises abo...

Страница 25: ...ments are opened but not closed properly system resources may become unavailable The Device Clear button clears all VXI 11 resources and allows new resources to be opened Figure 10 Web Status Control Page C H Technologies Inc 445 Round Rock West Drive Round Rock Texas 78681 www chtech com ...

Страница 26: ...cols are not required Regardless of the encapsulating protocol the messages and data that the EM405 8 uses is based on a simple binary command structure The commands allow the user to either write or read registers residing on the EM405 8 or on each M Module By writing registers residing on the EM405 8 the user can identify the module perform device configuration and receive status The registers r...

Страница 27: ...parameters however the specified module did not respond to the access This error code applies to M Module accesses only The error code could result from the specified M Module being absent the specified address being outside the range of addresses supported by the particular M Module or more serious hardware problems with the M Module itself If any of the above status codes are returned the EM405 ...

Страница 28: ... of a single status byte Command Syntax 0x20 md as ws ad dh dl Return SC where md module 0 EM405 8 control 1 M Module 0 2 M Module 1 as address space 0 I O 1 future use ws word size 2 16 bit word other values for future use ad address 0 to FF dh data MSB dl data LSB SC Status Code Example values shown hex To write the data value 0x1234 to M Module 0 send the following command Command cd md as ws a...

Страница 29: ...e data throughput Both a block read and a block write command is implemented The flexibility of the bock access feature is in the command protocol The protocol allows the user to specify four parameters in addition to the standard parameters also found in the single data read and write commands starting address address increment block size and number of blocks The EM405 8 firmware will execute the...

Страница 30: ... starting address 0x8 block size 1 number of blocks 32 address increment 0 Example 3 Read 32 words from two FIFOs one at address 0x8 and another at address 0xA starting address 0x8 block size 2 number of blocks 32 address increment 0 Example 4 Read 32 words starting at address 0x0 followed by 32 words starting at address 0x80 starting address 0x0 block size 32 number of blocks 2 address increment ...

Страница 31: ...ting address upper am starting address middle al starting address lower iu address increment upper number to increment address after each write il address increment lower number to increment address after each write bu number of blocks to read upper bl number of blocks to read lower bs block size in words i e number of words per block d1u data upper MSB d1l data lower LSB the number of data bytes ...

Страница 32: ... middle al starting address lower iu address increment upper number to increment address after each read il address increment lower number to increment address after each read bu number of blocks to read upper bl number of blocks to read lower bs block size in words i e number of words per block d1u data upper MSB d1l data lower LSB the number of data bytes ws bs number of blocks SC Status Code Ex...

Страница 33: ...TL Trigger Control 0x52 External Input TTL Trigger Control 0x54 Reserved 0x56 Reserved 0x58 Edge Clock 0 1 Source Control 0x5A Edge Clock 2 3 Source Control Note Registers 0x10 through 0x5A are only available on the 0001 version Reset Error Manufacturer Identification 0x00 A read of this register will return the 12 bit manufacturer ID value of the EM405 and the reset error bit The manufacturer ID ...

Страница 34: ...on only These registers control the direction conditioning source type and source of the M Module Trigger A signals M Module Trigger B Control 0x20 to 0x2F 0001 version only These registers control the direction conditioning source type and source of the M Module Trigger A signals LVDS Trigger Control 0x30 to 0x3F 0001 version only These registers control the direction conditioning output mode sou...

Страница 35: ... 3 2 1 0 Write Read Only Read 0 0 0 0 DID DID Device ID always FD916 EM405 8 Reg 04 Hardware Version Byte 5 4 Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Write Read Only Read Only Read HW Major HW Minor HW Major Major Version Level of EM405 8 Hardware Logic HW Minor Minor Version Level of EM405 8 Hardware Logic Reg 06 Firmware Version Byte 7 6 Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Write Read Onl...

Страница 36: ...0 then C TEMPA 4 if bit 9 1 then C TEMPA 1536 4 Note The VARF bit retains the setting during power off To use the variable fan feature it must only be set to variable one time The original factory default is Full ON Reg 0C Temperature Status Carrier Logic Area Byte D C Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Write Read Only Read 0 0 0 0 0 0 TEMPB TEMPB Temperature of sensor in the main logic are...

Страница 37: ...used 1 output 1 TASTx Signal Source Type only used when direction output 2 0 0 0 External TTL Trigger 0 0 1 External LVDS Trigger 0 1 0 M Module Trigger A 0 1 1 M Module Trigger B 1 0 0 reserved 1 0 1 reserved 1 1 0 reserved 1 1 1 reserved TASNx Signal Source Number direction output or EDGECLK Number direction input 3 Notes 1 The direction is with respect to the internal trigger logic For M Module...

Страница 38: ...used 1 output 1 TBSTx Signal Source Type only used when direction output 2 0 0 0 External TTL Trigger 0 0 1 External LVDS Trigger 0 1 0 M Module Trigger A 0 1 1 M Module Trigger B 1 0 0 reserved 1 0 1 reserved 1 1 0 reserved 1 1 1 reserved TBSNx Signal Source Number direction output or EDGECLK Number direction input 3 Notes 1 The direction is with respect to the internal trigger logic For M Module...

Страница 39: ...0 input or unused 1 output 1 LTSTx Signal Source Type only used when direction output 2 0 0 0 External TTL Trigger 0 0 1 External LVDS Trigger 0 1 0 M Module Trigger A 0 1 1 M Module Trigger B 1 0 0 reserved 1 0 1 reserved 1 1 0 reserved 1 1 1 reserved LTSNx Signal Source Number direction output or EDGECLK Number direction input 3 Notes 1 The direction is with respect to the internal trigger logic...

Страница 40: ...ng Reg 52 External Output TTL Trigger Control Byte 53 52 Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Write OTENx OTP OTST OTSN Read OTENx 0 0 0 OTP 0 0 0 0 OTST 0 OTSN OTENx Enabled 1 enabled OTP Polarity 0 normal 1 invert OTST Signal Source Type 1 0 0 0 External TTL Trigger 0 0 1 External LVDS Trigger 0 1 0 M Module Trigger A 0 1 1 M Module Trigger B 1 0 0 reserved 1 0 1 reserved 1 1 0 reserved 1 1...

Страница 41: ... for External TTL Trigger signal sources Reg 5A Edge Clock 2 3 Source Control Byte 5B 5A Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Write ECEN3 EC3S EC3SN ECEN2 EC2S EC2SN Read ECEN3 EC3S 0 EC3SN ECEN2 EC2S 0 EC2SN ECENx Enabled 1 enabled ECxS Signal Source Type 1 0 0 0 External TTL Trigger 0 0 1 External LVDS Trigger 0 1 0 M Module Trigger A 0 1 1 M Module Trigger B 1 0 0 reserved 1 0 1 reserved 1...

Страница 42: ...r is an input to the internal trigger control logic A trigger received by an M Module is referred to as an output trigger since it is produced by the internal trigger logic If the trigger is defined as an input then it can be used to produce a trigger to an M Module or an external device A single input trigger can be used to drive any number of output triggers If a trigger is defined as an output ...

Страница 43: ... near the fan input one is in the area of main carrier control logic and the other is in the M Module area These sensors can be read by reading the three Temperature Status registers of the EM405 8 The TEMPx field inside this register represents the current temperature as read by the temperature sensor To translate the TEMPx value in to degrees Celsius use the following equation If bit 9 0 then C ...

Страница 44: ...ure from the ambient inlet air The user may select the fan to remain full on at all times by setting the VARF bit in the Fan Temperature Control register to a 1 C H Technologies Inc 445 Round Rock West Drive Round Rock Texas 78681 www chtech com ...

Страница 45: ... CH1 CH1 GND CH3 CH3 GND CH5 CH5 GND CH7 CH7 CH0 CH0 GND CH2 CH2 GND CH4 CH4 GND CH6 CH6 GND Connector Type Molex 83619 9011 Double Stacked Pin outs are the same on both connectors PIN DESC 1 GND 2 GND 3 48V 4 GND 5 48V 3 5 2 4 1 Connector Type Circular 5 position DIN CUI SDF 50J C H Technologies Inc 445 Round Rock West Drive Round Rock Texas 78681 www chtech com ...

Страница 46: ...A 2 C H Technologies Inc 445 Round Rock West Drive Round Rock Texas 78681 www chtech com ...

Страница 47: ...N O T E S C H Technologies Inc 445 Round Rock West Drive Round Rock Texas 78681 www chtech com ...

Страница 48: ... C H Technologies Inc 445 Round Rock West Drive Round Rock Texas 78681 www chtech com ...

Страница 49: ...soever You may of course continue to use the information which you supply Please refrain from using this form for technical questions or for requests for additional publications this will only delay the response Instead please direct your technical questions to your authorized C H representative COMMENTS Thank you for helping C H to deliver the best possible product Your support is appreciated Sin...

Страница 50: ...er or not your comments were being incorporated NOTE This form may not be used to request copies of documents or to request waivers deviations or clarification of specification requirements on current contracts Comments submitted on this form do not constitute or imply authorization to waive any portion of the referenced document s or to amend contractual requirements Fold along this line Fold alo...

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