CH Tech EM405D user manual FAN and Temperature Control

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The function of each M-module trigger line is fully dependent upon the M-module. Refer to the particular M-module’s documentation for further details.

4.5 FAN AND TEMPERATURE CONTROL

The EM405D contains an on-board temperature sensor placed near the M-module positions. The current temperature inside the EM405D case can be determined by reading the Fan & Temperature Control register of the EM405D. The TEMP field inside this register represents the current temperature as read by the temperature sensor. To translate the TEMP value in to degrees Celsius use the following equation:

°C = (TEMP – 281) / 4.6

The temperature sensor is also read by the firmware and used to control the variable speed fan. When the fan is set to variable, the firmware constantly monitors the temperature and speeds up the fan as the temperature rises. The variable fan is designed to maintain a maximum 20° C rise in temperature 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’.

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Contents H E R N E T Copyright 2004 by C&H Technologies, Inc CopyrightDocument Revision Notice Introduction Installation Table of Contents General DescriptionFunctional Description Operating InstructionsList of Tables EM405D Ethernet M-Module CarrierFeatures and Specifications Key FeaturesPurpose of Equipment Maximum Ratings SpecificationsMechanical ElectricalEnvironmental Bus ComplianceApplicable Documents Installation Unpacking and Inspection Handling PrecautionsInstallation of M-MODULES MA Configuration Diagram Ethernet Interface Functional Description GeneralPower Conversion Module InterfaceRear Panel Front Panel Front PanelPage Configuring the Ethernet Interface Operating Instructions GeneralIP Address Default subnet mask is Gateway Default gateway address is Port NumbersRecommendation Default setting is Auto-Scan Telnet x.x.x.x Performing the Configuration Wireless Ethernet Wi-Fi Page Error Handling Table I. Command SummaryCommunicating with the Carrier and M-MODULES Table II. Status Code SCPage Read Data command Write Data commandStarting address + block size * word size Block AccessNumber of bytes = number of blocks * block size * word size 0x50 md as ws ad ai nh nl bs Table III. Register Summary 5 EM405D Configuration/Status RegistersDevice Identification Reset Error & Manufacturer IdentificationHardware Version Firmware VersionFan Control & Temperature Status Reset & Trigger ControlFollowing values would be invalid Controlling the TriggersFAN and Temperature Control Page Figure A-1 -Pin Dsub Connector Page Table B-1. Ethernet Interface Default Settings Appendix B Wired Ethernet Default SettingsOn Passive Connection True CPU Performance High Page Wireless LAN Settings Table C-1. Wireless Ethernet Configuration Default SettingsCurrent Port Profile TCP Sockets Gpio Page T E S Page Comments Readers Comment FormInstructions