CH Tech EM405D user manual Controlling the Triggers, Following values would be invalid

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4.4 CONTROLLING THE TRIGGERS

The carrier implements flexible trigger control capabilities providing the user with many options for using triggers. Each M-module can support two trigger lines (labeled A & B) which can be mapped to one of two external trigger lines (one input and one output) available on the carrier or to the trigger lines of the adjacent M-module.

The carrier’s external trigger lines can be accessed at the 9-pin DSUB connector on the back panel of the EM405D. Refer to Appendix A for pin-out details of the 9-pin DSUB connector. The input trigger line has a software configurable threshold and input impedance. The input threshold is configurable using the TLVL bit in the Reset & Trigger Control register and can be set to either +1.4 volts or +2.5 volts. The input impedance is configurable using the TIMP bit in the Reset & Trigger Control register and can be set to either high impedance (>100KΩ) or 50Ω. The output trigger line has a set output impedance of 50Ω and a set output drive level of +5V (typical) into a high impedance load.

Each M-module trigger line can be configured to be either an input or an output and can be mapped to either the external trigger lines or to one of the trigger lines on the other M-module. Each trigger line contains two bit fields in the Reset & Trigger Control register. The xTzD bit controls the trigger direction and the xTzM controls the trigger mapping, where x specifies the module and z specifies the trigger (for example ATBM is module A trigger B). If the xTzM bit field is set to map the trigger line to the external trigger, the trigger is connected to either the external input or the external output depending on the value of the xTzD bit. If the xTzM bit field is set to map the trigger line to another M-module trigger line, then the two triggers must be configured to be opposite directions. Also the second M-module trigger line must be mapped to the first M-module trigger line. For example, if module A trigger B is to be outputted to module B trigger A then the corresponding bit fields must be set as follows:

ATBD = output

ATBM = to/from Module B Trigger A

BTAD = input

BTAM = to/from Module A Trigger B

The following values would be invalid:

ATBD = output

ATBM = to/from Module B Trigger A

BTAD = output

BTAM = to/from Module A Trigger B

or

ATBD = output

ATBM = to/from Module B Trigger A

BTAD = input

BTAM = to/from external trigger

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Contents H E R N E T Copyright Copyright 2004 by C&H Technologies, IncDocument Revision Notice Introduction Table of Contents General Description InstallationFunctional Description Operating InstructionsEM405D Ethernet M-Module Carrier List of TablesPurpose of Equipment Features and SpecificationsKey Features Specifications Maximum RatingsElectrical MechanicalEnvironmental Bus ComplianceApplicable Documents Installation of M-MODULES Installation Unpacking and InspectionHandling Precautions MA Configuration Diagram Functional Description General Ethernet InterfaceRear Panel Power ConversionModule Interface Front Panel Front PanelPage IP Address Configuring the Ethernet InterfaceOperating Instructions General Recommendation Default subnet mask is GatewayDefault gateway address is Port Numbers Default setting is Auto-Scan Telnet x.x.x.x Performing the Configuration Wireless Ethernet Wi-Fi Page Table I. Command Summary Error HandlingCommunicating with the Carrier and M-MODULES Table II. Status Code SCPage Write Data command Read Data commandBlock Access Starting address + block size * word sizeNumber of bytes = number of blocks * block size * word size 0x50 md as ws ad ai nh nl bs 5 EM405D Configuration/Status Registers Table III. Register SummaryReset Error & Manufacturer Identification Device IdentificationHardware Version Firmware VersionReset & Trigger Control Fan Control & Temperature StatusControlling the Triggers Following values would be invalidFAN and Temperature Control Page Figure A-1 -Pin Dsub Connector Page Appendix B Wired Ethernet Default Settings Table B-1. Ethernet Interface Default SettingsOn Passive Connection True CPU Performance High Page Table C-1. Wireless Ethernet Configuration Default Settings Wireless LAN SettingsCurrent Port Profile TCP Sockets Gpio Page T E S Page Readers Comment Form CommentsInstructions
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