USER MANUAL
Contents
1. 11 1 1 2 Command String Formal syntax with commands concatenation and addressing Start l Address l Body l Delimiter Destination _id Command_1 Parameter1_1 Parameter1_2 CRJ Command _2 Parameter2_1 Parameter2_2 Command _3 Parameter3_1 Parameter3_2 11 1 2 Device Message Format Start l Address optional l Body l delimiter 11 1 2 1 Device Long Response Echoing command Start l Address optional l Body l Delimiter Sender_id Command SP Param1 Param2 result CRIILF ICR Carriage return ASCII 13 0x0D ILF Line feed ASCII 10 0x0A ISP Space ASCII 32 0x20 14 VS 401USB Protocol 3000 11 1 3 Command Terms Command A sequence of ASCII letters A Z a z and Command and parameters must be separated by at least one space Parameters A sequence of alphanumeric ASCII characters 0 9 A Z a z and some special characters for specific commands Parameters are separated by commas Message string Every command entered as part of a message string begins with a message starting character and ends with a message closing character Note A string can contain more than one command Commands are separated by a pipe character Message starting character For host command query For device response Device address Optional for K NET K2. 2 Kramer Protocol 3000 Commands Figures Figure 1 VS 401USB 4x1 USB Switcher Figure 2 Connecting to the VS 401USB CODA NOAN PR ONN Na O ik ik NARA Introduction Welcome to Kramer Electronics Since 1981 Kramer Electronics has been providing a world of unique creative and affordable solutions to the vast range of problems that confront the video audio presentation and broadcasting professional on a daily basis In recent years we have redesigned and upgraded most of our line making the best even better Our 1 000 plus different models now appear in 11 groups that are clearly defined by function GROUP 1 Distribution Amplifiers GROUP 2 Switchers and Routers GROUP 3 Control Systems GROUP 4 Format Standards Converters GROUP 5 Range Extenders and Repeaters GROUP 6 Specialty AV Products GROUP 7 Scan Converters and Scalers GROUP 8 Cables and Connectors GROUP 9 Room Connectivity GROUP 10 Accessories and Rack Adapters and GROUP 11 Sierra Video Products Congratulations on purchasing your Kramer VS 401USB 4x7 USB Switcher which is ideal for the following typical applications e Projection systems in conference rooms boardrooms auditoriums hotels and churches production studios rental and staging e Any application where high quality conversion and switching of multiple and different video signals to graphical data signals is required for projection purposes 2 2 1 Getting Start
3. PRODUCT UNDER THE MAGNUSON MOSS WARRANTY ACT 15 U S C A 2301 ET SEQ OR OTHER APPICABLE LAW THE FOREGOING DISCLAIMER OF IMPLIED WARRANTIES SHALL NOT APPLY TO YOU AND ALL IMPLIED WARRANTIES ON THIS PRODUCT INCLUDING WARRANTIES OF MERCHANTABILITY AND FITNESS FOR THE PARTICULAR PURPOSE SHALL APPLY AS PROVIDED UNDER APPLICABLE LAW Other Conditions This limited warranty gives you specific legal rights and you may have other rights which vary from country to country or state to state This limited warranty is void if i the label bearing the serial number of this product has been removed or defaced ii the product is not distributed by Kramer Electronics or iii this product is not purchased from an authorized Kramer Electronics reseller If you are unsure whether a reseller is an authorized Kramer Electronics reseller please visit our Web site at www kramerelectronics com or contact a Kramer Electronics office from the list at the end of this document Your rights under this limited warranty are not diminished if you do not complete and return the product registration form or complete and submit the online product registration form Kramer Electronics thanks you for purchasing a Kramer Electronics product We hope it will give you years of satisfaction For the latest information on our products and a list of Kramer distributors visit our Web site where updates to this user manual may be found We welcome your questions comments an
4. Program using a small screwdriver to upgrade to the latest Kramer firmware via RS 232 or release for Normal the factory default 5V DC 5V DC connector for powering the unit 5 IR Receiver The yellow LED lights when receiving signals from the infrared remote control transmitter RS 232 9 pin D sub Connects to a PC for firmware upgrade and control Connector DEVICE SELECT Buttons Select a device to switch to the host from 1 to 4 8 ON LED llluminates green when receiving power VS 401USB Defining the VS 401USB 4x1 USB Switcher 5 Connecting the VS 401USB VS 401USB After connecting your VS 401USB connect its power and then switch on the power to each device T Always switch off the power to each device before connecting it to your To connect the VS 401USB as illustrated in the example in Figure 2 1 Connect the USB devices for example hard drives and or memory sticks to the DEVICE ports For example a Hard drive to port 1 Memory stick to port 2 Smart phone to port 3 Memory stick to port 4 2 Connect the HOST USB port to an acceptor for example an LCD display with a USB port 3 If required you can connect a PC and or controller to the RS 232 terminal block see Section 5 1 For best results we recommend that you use high quality USB cables 4 Connect the 5V DC power adapter to the power socket and connect the adapter to the mains electricity not shown in Figure 2
5. damage during shipment Kramer Electronics will not be responsible for any costs related to the removal or re installation of this product from or into any installation Kramer Electronics will not be responsible for any costs related to any setting up this product any adjustment of user controls or any programming required for a specific installation of this product How to Obtain a Remedy under this Limited Warranty To obtain a remedy under this limited warranty you must contact either the authorized Kramer Electronics reseller from whom you purchased this product or the Kramer Electronics office nearest you For a list of authorized Kramer Electronics resellers and or Kramer Electronics authorized service providers please visit our web site at www kramerelectronics com or contact the Kramer Electronics office nearest you In order to pursue any remedy under this limited warranty you must possess an original dated receipt as proof of purchase from an authorized Kramer Electronics reseller If this product is returned under this limited warranty a return authorization number obtained from Kramer Electronics will be required You may also be directed to an authorized reseller or a person authorized by Kramer Electronics to repair the product If itis decided that this product should be returned directly to Kramer Electronics this product should be properly packed preferably in the original carton for shipping Cartons not bearing a return author
6. 5 1 VS 401USB Connecting the VS 401USB Hard Drive LCD Display Smart with USB Port Stick Phone Figure 2 Connecting to the VS 401USB Connecting a PC You can connect to the VS 401USB via an RS 232 connection using for example a PC Note that a null modem adapter connection is not required To connect to the VS 401USB via RS 232 connect the RS 232 9 pin D sub rear panel port on the VS 401USB unit via a 9 wire straight cable only pin 2 to pin 2 pin 3 to pin 3 and pin 5 to pin 5 need to be connected to the RS 232 9 pin D sub port on your PC 6 1 Operating the VS 401USB You can operate the VS 401USB via the front panel buttons by pressing one of the four DEVICE SELECT buttons to select a device to switch to the HOST You can also use the application software see Section 6 1 or the RC IR3 IR remote control transmitter to operate the VS 401USB The Application Software Use the K SINGLE control application software to control the VS 401USB via the Ethernet or RS 232 9 pin D sub The latest version of K SINGLE and installation instructions can be downloaded from the Kramer Web site at www kramerelectronics com 7 Firmware Upgrade You can upgrade the VS 401USB via the Kramer K UPLOAD software The latest version of K UPLOAD and installation instructions as well as the application software and its user guide can be downloaded from the Kramer Web site at www kramerelectronics com VS 401USB Firm
7. 96 EC aims to reduce the amount of WEEE sent for disposal to landfill or incineration by requiring it to be collected and recycled To comply with the WEEE Directive Kramer Electronics has made arrangements with the European Advanced Recycling Network EARN and will cover any costs of treatment recycling and recovery of waste Kramer Electronics branded equipment on arrival at the EARN facility For details of Kramer s recycling arrangements in your particular country go to our recycling pages at htto Avww kramerelectronics com support recycling Overview The Kramer VS 401USB is a high quality 4x1 USB switcher It accepts up to four USB devices and switches the selected device to the host The VS 401USB always powers the selected port as well as the three that were not selected allowing attached USB units to be charged for example In particular the VS 401USB features Four DEVICE SELECT buttons Hi speed USB revision 2 0 Firmware upgrade via RS 232 Remote control via RS 232 port and or RC IR3 IR remote control transmitter An external 5V DC source making it suitable for field operation 4 Defining the VS 401USB 4x1 USB Switcher DEVICES Figure 1 VS 401USB 4x1 USB Switcher Feature Function EN HOST USB type B Port Connects to the host 2 DEVICE USB type A port Connects to a USB device from 1 to 4 3 PROG Button Push in for
8. KRAMER ELECTRONICS LTD USER MANUAL MODEL VS 401USB 4x1 USB Switcher P N 2900 300029 Rev 1 VS 401USB Quick Start Guide h This guide helps you install and use your product for the first time For more detailed information go a to http www kramerelectronics com support product_downloads asp to download the latest manual 1 or scan the QR code on the left Step 1 Check what s in the box A VS 401USB 4x1 USB Switcher A 4 Rubber feet 1 Power supply 5V DC A 1 Quick Start Guide 1 USB cable Step 2 Install the VS 401USB Attach the rubber feet and place on a table or mount the machine in a rack using an optional RK 3T rack mount Step 3 Connect inputs and outputs DEVICES Step 4 Connect the power Connect the power adapters to the VS 401USB and plug the adapter into the mains electricity Step 5 Operate the VS 401USB Press a DEVICE SELECT button to switch a device to the output DEVICE SELECT OOO 4x1 USB Switcher vVs 401USB Contents Introduction 2 Getting Started 2 1 Achieving the Best Performance 2 2 Recycling Kramer Products 3 Overview 4 Defining the VS 401USB 4x1 USB Switcher 5 Connecting the VS 401USB 5 1 Connecting a PC 6 Operating the VS 401USB 6 1 The Application Software 7 Firmware Upgrade 8 Technical Specifications 9 Default Communication Parameters 10 Kramer Protocol 2000 11 Protocol 3000 11 1 Kramer Protocol 3000 Syntax 11
9. NET Device ID followed by Query sign follows some commands to define a query request Message closing character CRI For host messages carriage return ASCII 13 CRLF For device messages carriage return ASCII 13 line feed ASCII 10 Command chain separator character When a message string contains more than one command a pipe character separates each command Spaces between parameters or command terms are ignored 11 1 4 11 1 5 11 1 6 11 1 7 Entering Commands You can directly enter all commands using a terminal with ASCII communications software such as HyperTerminal Hercules etc Connect the terminal to the serial or Ethernet port on the Kramer device To enter CR press the Enter key LF is also sent but is ignored by command parser For commands sent from some non Kramer controllers like Crestron some characters require special coding such as X Refer to the controller manual Command Forms Some commands have short name syntax in addition to long name syntax to allow faster typing The response is always in long syntax Chaining Commands Multiple commands can be chained in the same string Each command is delimited by a pipe character When chaining commands enter the message starting character and the message closing character only once at the beginning of the string and at the end Commands in t
10. ON 0 D N5 N4 N3 N2 N1 NO 7 6 5 4 3 2 1 0 1st byte INPUT 1 16 15 14 13 12 1 10 7 6 5 4 3 2 1 0 2nd byte OUTPUT 1 06 05 04 03 02 01 o0 7 6 5 4 3 2 1 0 3rd byte MACHINE NUMBER 1 OVR X M4 M3 M2 M1 MO 7 6 5 4 3 2 1 0 4th byte 1st BYTE Bit 7 Defined as 0 D DESTINATION 0 for sending information to the switchers from the PC 1 for sending to the PC from the switcher N5 NO INSTRUCTION The function that is to be performed by the switcher s is defined by the INSTRUCTION 6 bits Similarly if a function is performed via the machine s keyboard then these bits are set with the INSTRUCTION NO which was performed The instruction codes are defined according to the table below INSTRUCTION NO is the value to be set for N5 NO 2nd BYTE Bit 7 Defined as 1 16 10 INPUT When switching ie instruction codes 1 and 2 the INPUT 7 bits is set as the input number which is to be switched Similarly if switching is done via the machine s front panel then these bits are set with the INPUT NUMBER which was switched For other operations these bits are defined according to the table 3rd BYTE Bit 7 Defined as 1 O6 00 OUTPUT When switching ie instruction codes 1 and 2 the OUTPUT 7 bits is set as the output number which is to be switched Similarly if switching is done via the machine s front panel the
11. arameter The replies to instructions 10 and 11 are as per the definitions in instructions 7 and 8 respectively For example if the present status of machine number 5 is breakaway setting then the reply to the HEX code 0B 80 80 85 would be HEX codes 4B 80 81 85 NOTE 13 This is a request to identify the switcher s in the system If the OUTPUT is set as 0 and the INPUT is set as 1 2 5 or 7 the machine sends its name The reply is the decimal value of the INPUT and OUTPUT For example for a 2216 the reply to the request to send the audio machine name would be HEX codes 96 90 81 i e 128dec 22dec for 2nd byte and 128dec 16dec for 3rd byte If the request for identification is sent with the INPUT set as 3 or 4 the appropriate machine sends its software version number Again the reply would be the decimal value of the INPUT and OUTPUT the INPUT representing the number in front of the decimal point and the OUTPUT representing the number after it For example for version 3 5 the reply to the request to send the version number would be HEX codes 7D 83 85 81 i e 128dec 3dec for 2nd byte 128dec 5dec for 3rd byte If the OUTPUT is set as 1 then the ASCII coding of the lettering following the machine s name is sent For example for the VS 7588YC the reply to the request to send the first suffix would be HEX codes 7D D9 c3 81 i e 128dec ASCII for Y 128dec ASCII for C NOTE 14 The number of inputs and
12. d feedback Web site www kramerelectronics com KRAMER E mail info kramerel com SAFETY WARNING Disconnect the unit from the power m supply before opening and servicing P N 2900 300029 Rev 1
13. ed We recommend that you e Unpack the equipment carefully and save the original box and packaging materials for possible future shipment e Review the contents of this user manual e Use only the power cord that is supplied with this machine Go to http Awww kramerelectronics com to check for up to date user manuals application programs and to check if firmware upgrades are available where appropriate Achieving the Best Performance To achieve the best performance e Use only good quality connection cables to avoid interference deterioration in signal quality due to poor matching and elevated noise levels often associated with low quality cables Do not secure the cables in tight bundles or roll the slack into tight coils e Avoid interference from neighboring electrical appliances that may adversely influence signal quality e Position your Kramer VS 401USB away from moisture excessive sunlight and dust This equipment is to be used only inside a building It may only be connected to other equipment that is installed inside a building Caution There are no operator serviceable parts inside the unit SS Warning Use only the Kramer Electronics input power wall adapter that is provided with the unit Warning Disconnect the power and unplug the unit from the wall before installing 401USB Getting Started 2 2 Recycling Kramer Products The Waste Electrical and Electronic Equipment WEEE Directive 2002
14. he string do not execute until the closing character is entered A separate response is sent for every command in the chain Maximum String Length 64 characters SB Protocol 3000 11 2 Kramer Protocol 3000 Commands Short Command Form Description Permission fe __ Protocol handshaking BAUD Set protocol serial ports baud rate BAUD Get protocol serial ports baud rate BUILD Read device build date End User DATE FACTORY Reset to factory default configuration Administrator HELP Listof commands ow o foo O Load new firmware file Administrator MACH NUM Set machine number MODEL Read device model NAME Set machine DNS name Administrator NAME Get machine DNS name NAME RST Lo Reset machine DNS name to factory Administrator default P2000 __ Switch to protocol 2000 PASS Set password Administrator PASS Get password Administrator PROT VER Read device protocol version RESET Resstaevee Administrator ROUTE semu ROUTE J Getinout SECURE Start Stop security Administrator SECURE Get current security state Administrator s2 __ Read device serial number UPGRADE Set device flag of new firmware Administrator 01USB Protocol 3 LIMITED WARRANTY The warranty obligations of Kramer Electronics for this product are limited to the terms set forth below Whatis Covered This limited warranty covers defects in materials and workmanship in this product What i
15. his product is covered under this limited warranty This limited warranty is not transferable to subsequent purchasers or owners of this product What Kramer Electronics will do Kramer Electronics will at its sole option provide one of the following three remedies to whatever extent it shall deem necessary to satisfy a proper claim under this limited warranty 1 Elect to repair or facilitate the repair of any defective parts within a reasonable period of time free of any charge for the necessary parts and labor to complete the repair and restore this product to its proper operating condition Kramer Electronics will also pay the shipping costs necessary to return this product once the repair is complete 2 Replace this product with a direct replacement or with a similar product deemed by Kramer Electronics to perform substantially the same function as the original product 3 Issue a refund of the original purchase price less depreciation to be determined based on the age of the product at the time remedy is sought under this limited warranty What Kramer Electronics will not do Under This Limited Warranty If this product is returned to Kramer Electronics or the authorized dealer from which it was purchased or any other party authorized to repair Kramer Electronics products this product must be insured during shipment with the insurance and shipping charges prepaid by you If this product is returned uninsured you assume all risks of loss or
16. ization number will be refused Limitation on Liability THE MAXIMUM LIABILITY OF KRAMER ELECTRONICS UNDER THIS LIMITED WARRANTY SHALL NOT EXCEED THE ACTUAL PURCHASE PRICE PAID FOR THE PRODUCT TO THE MAXIMUM EXTENT PERMITTED BY LAW KRAMER ELECTRONICS IS NOT RESPONSIBLE FOR DIRECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES RESULTING FROM ANY BREACH OF WARRANTY OR CONDITION OR UNDER ANY OTHER LEGAL THEORY Some countries districts or states do not allow the exclusion or limitation of relief special incidental consequential or indirect damages or the limitation of liability to specified amounts so the above limitations or exclusions may not apply to you Exclusive Remedy TO THE MAXIMUM EXTENT PERMITTED BY LAW THIS LIMITED WARRANTY AND THE REMEDIES SET FORTH ABOVE ARE EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES REMEDIES AND CONDITIONS WHETHER ORAL OR WRITTEN EXPRESS OR IMPLIED TO THE MAXIMUM EXTENT PERMITTED BY LAW KRAMER ELECTRONICS SPECIFICALLY DISCLAIMS ANY AND ALL IMPLIED WARRANTIES INCLUDING WITHOUT LIMITATION WARRANTIES OF MERCHANTABILITY AND FITNESS FORA PARTICULAR PURPOSE IF KRAMER ELECTRONICS CANNOT LAWFULLY DISCLAIM OR EXCLUDE IMPLIED WARRANTIES UNDER APPLICABLE LAW THEN ALL IMPLIED WARRANTIES COVERING THIS PRODUCT INCLUDING WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE SHALL APPLY TO THIS PRODUCT AS PROVIDED UNDER APPICABLE LAW IF ANY PRODUCT TO WHICH THIS LIMITED WARRANTY APPLIES IS A CONSUMER
17. ler name 10 Request first prefix 6 RS422 controller version 11 Request second prefix 7 remote control name 12 Request third prefix 8 remote software version 9 Protocol 2000 revision 62 DEFINE MACHINE 1 number of inputs 1 for video 14 2 number of outputs 2 for audio 3 number of setups 3 for SDI 4 for remote panel 5 for RS 422 controller NOTES on the above table NOTE 2 These are bi directional definitions That is if the switcher receives the code it performs the instruction and i the instruction is performed due to a keystroke operation on the front panel then these codes are sent For example i the HEX code 01 85 88 83 was sent from the PC then the switcher machine 3 switches input 5 to output 8 If the user switched input 1 to output 7 via the front panel keypad then the switcher sends HEX codes 41 81 87 83 to the PC When the PC sends one of the commands in this group to the switcher then if the instruction is valid the switcher replies by sending to the PC the same four bytes that it was sent except for the first byte where the DESTINATION bit is set high NOTE 3 SETUP 0 is the present setting SETUP 1 and higher are the settings saved in the switcher s memory i e those used for Store and Recall NOTE 4 The reply to a REQUEST instruction is as follows the same instruction and INPUT codes as were sent are returned and the OUTPUT is assigned the value of the requested p
18. n these bits are set with the OUTPUT NUMBER which was switched For other operations these bits are defined according to the table 4th BYTE Bit 7 Defined as 1 Bit 5 Don t care OVR Machine number override M4 MO MACHINE NUMBER Used to address machines in a system via their machine numbers When several machines are controlled from a single serial port they are usually configured together with each machine having an individual machine number If the OVR bit is set then all machine numbers accept implement the command and the addressed machine replies For a single machine controlled via the serial port always set M4 MO 1 and make sure that the machine itself is configured as MACHINE NUMBER 1 VS 401USB Kramer Protocol 2000 Instruction Codes for Protocol 2000 inition for Specific Instructi es 1 SWITCH VIDEO Set equal to video input which is Set equal to video output which is 2 15 to be switched to be switched 0 disconnect 0 to all the outputs 5 REQUEST STATUS Set as SETUP Equal to output number whose 4 3 OF A VIDEO OUTPUT status is reqd 56 CHANGE TO ASCII 0 SVS protocol 19 Generic protocol Protocol 3000 61 IDENTIFY MACHINE 1 video machine name 0 Request first 4 digits 13 2 audio machine name 1 Request first suffix 3 video software version 2 Request second suffix 4 audio software version 3 Request third suffix 5 RS422 control
19. outputs refers to the specific machine which is being addressed not to the system For example if six 16X16 matrices are configured to make a 48X32 system 48 inputs 32 outputs the reply to the HEX code 3E 82 81 82 ie request the number of outputs would be HEX codes 7E 82 90 82 ie 16 outputs NOTE 15 When the OVR bit 4th byte is set then the video commands have universal meaning For example instruction 1 SWITCH VIDEO causes all units including audio data etc to switch Similarly if a machine is in FOLLOW mode it performs any video instruction NOTE 19 After this instruction is sent the unit will respond to the ASCII command set defined by the OUTPUT byte The ASCII command to operate with the HEX command set must be sent in order to return to working with HEX codes VS 401USB amer Protocol 2000 11 Protocol 3000 The VS 401USB can be operated using serial commands from a PC remote controller or touch screen using the Kramer Protocol 3000 This section describes e Kramer Protocol 3000 syntax see Section 11 1 e Kramer Protocol 3000 commands see Section 11 2 11 1 Kramer Protocol 3000 Syntax 11 1 1 Host Message Format Start l Address optional l Body l Delimiter Destinaton a messa 11 1 1 1 Simple Command Command string with only one command without addressing Start l Body l Delimiter CRI Command SP Parameter_1 Parameter_2
20. s Not Covered This limited warranty does not cover any damage deterioration or malfunction resulting from any alteration modification improper or unreasonable use or maintenance misuse abuse accident neglect exposure to excess moisture fire improper packing and shipping such claims must be presented to the carrier lightning power surges or other acts of nature This limited warranty does not cover any damage deterioration or malfunction resulting from the installation or removal of this product from any installation any unauthorized tampering with this product any repairs attempted by anyone unauthorized by Kramer Electronics to make such repairs or any other cause which does not relate directly to a defect in materials and or workmanship of this product This limited warranty does not cover cartons equipment enclosures cables or accessories used in conjunction with this product Without limiting any other exclusion herein Kramer Electronics does not warrant that the product covered hereby including without limitation the technology and or integrated circuit s included in the product will not become obsolete or that such items are or will remain compatible with any other product or technology with which the product may be used How Long Does this Coverage Last Seven years as of this printing please check our Web site for the most current and accurate warranty information Who is Covered Only the original purchaser of t
21. ware Upgrade eee 8 Technical Specifications DEVICE PORTS 4 x USB type A ports HOST PORT 1 USB type B port CONTROL Front panel buttons IR remote control RS 232 on a 9 pin D sub connector POWER SOURCE 5V DC 3 2A OPERATING 0 to 40 C 32 to 104 F TEMPERATURE STORAGE 40 to 70 C 49 to 158 F TEMPERATURE HUMIDITY 10 to 90 RHL non condensing DIMENSIONS 12cm x 7 15cm x 2 44cm 4 7 x 2 81 0 96 W D H WEIGHT 0 3kg 0 67Ibs approx ACCESSORIES Power supply bracket installation kit OPTIONS Rack adapters RK 3T RK 6T or RK 9T Specifications are subject to change without notice at http www kramerelectronics com VS 401USB Technical Specifications 9 Default Communication Parameters RS 232 775200 paas e oas oo C None Party a Example Output 1 to Input 1 0x01 0x81 Example Output 1 to Input 1 AV 1 gt 1 lt CR gt 0x81 0x81 Switching Protocol P2000 gt P3000 P3000 gt P2000 0x38 0x80 0x83 0x81 P2000 lt CR gt Front Panel Press and hold Output 1 and Front Panel Press and hold Output 1 and Output 3 simultaneously Output 2 simultaneously VS 401USB Default Communication Parameters 10 Kramer Protocol 2000 The Kramer Protocol 2000 for RS 232 RS 485 communication uses four bytes of information as defined below All the values in the table are decimal unless otherwise stated MSB LSB DESTINATION INSTRUCTI
Download Pdf Manuals
Related Search