GridConnect Device Server MSS 485 Скачать руководство пользователя

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NET485

RS422/485 Serial to

Ethernet Adapter

Revision C March 24, 2006

Part Number GC-800-240

Содержание Device Server MSS 485

Страница 1: ...NET485 RS422 485 Serial to Ethernet Adapter Revision C March 24 2006 Part Number GC 800 240 ...

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Страница 3: ...ns intended to support or sustain life or in any other application in which the failure of a Grid Connect Inc product could create a situation where personal injury death or severe property or environmental damage may occur Grid Connect Inc reserves the right to discontinue or make changes to its products at any time without notice Grid Connect and the Grid Connect logo and combinations thereof ar...

Страница 4: ...ial installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with this guide may cause harmful interference to radio communications Changes or modifications to this device not explicitly approved by Grid Connect will void the user s authority to operate this device The information in this guide may change without notice The manuf...

Страница 5: ...r a period of 60 DAYS after the date of shipment In no event will Grid Connect be responsible to the user in contract in tort including negligence strict liability or otherwise for any special indirect incidental or consequential damage or loss of equipment plant or power system cost of capital loss of profits or revenues cost of replacement power additional expenses in the use of existing softwar...

Страница 6: ...e Installer 3 2 3 1 4 Device Found 3 2 3 1 5 Assign IP 3 3 3 1 6 Assignment 3 4 3 2 Using Device Installer 3 5 3 2 1 Viewing the Current Configuration 3 5 3 3 Configuration Using Web Manager 3 7 3 3 1 Accessing XPort Using Device Installer 3 7 3 4 Network Configuration 3 8 3 4 1 Automatic IP Address Configuration 3 8 3 4 2 Static IP Address Configuration 3 9 3 4 3 Ethernet Configuration 3 9 3 5 Se...

Страница 7: ... 3 14 14 Send Characters 3 38 3 14 15 Telnet Terminal Type 3 38 3 14 16 Channel Port Password 3 38 3 15 E mail Settings 3 38 3 15 1 E mail Setup 3 39 3 15 2 Trigger Setup 3 39 3 16 Expert Settings 3 40 3 16 1 TCP Keepalive time in seconds 3 40 3 16 2 ARP Cache timeout in seconds 3 40 3 16 3 Enable High Performance 3 40 3 16 4 Disable Monitor Mode at Bootup 3 40 3 16 5 RS 485 TX Enable Active Level...

Страница 8: ... 1 Problems and Error Messages 6 1 7 Binary to Hex Conversion 7 1 7 1 1 Conversion Table 7 1 7 1 2 Scientific Calculator 7 1 List of Figures Figure 1 RS485 Transceiver 1 3 Figure 2 RS422 Four Wire Interface 1 4 Figure 3 RS485 Network 1 5 Figure 4 Main Features 2 1 Figure 5 Phoenix Connector 2 2 Figure 6 Ethernet Jack 2 3 Figure 7 CD Browser Main Window 3 1 Figure 8 Device Installer Dialog Box 3 2 ...

Страница 9: ... Table 6 Interface Mode Options 3 27 Table 7 Common Interface Mode Settings 3 27 Table 8 Flow Control Options 3 27 Table 9 Reserved Ports 3 28 Table 10 Connect Mode Options 3 29 Table 11 Manual Connection Address Example 3 31 Table 12 Modem Mode Commands 3 34 Table 13 Disconnect Mode Options 3 35 Table 14 Flush Mode Options 3 36 Table 15 Pack Control Options 3 37 NET485 User Guide vii ...

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Страница 11: ...and induced noise signals that can appear as common mode voltages on a network This also allows for data transmission at much higher data rates up to 460K bits second and longer distances up to 4000 ft What is the difference between RS422 and RS485 Like RS232 RS422 is intended for point to point communications In a typical application RS422 uses four wires two separate Twisted Pairs of wires to tr...

Страница 12: ...dy to transmit data from its serial port Once the data has been transmitted the XPort automatically de asserts the enable signal to allow other nodes to transmit their data 1 2 2 NET485 Wiring NOTE You cannot configure the NET485 through the serial port The boot program has no control over the Configurable Pins so the NET485 will never be able to send data during the boot period initial 5 seconds ...

Страница 13: ... TX on pin 4 The receive section of the XPort is labeled RX on pin 5 Note that the CP1 pin on the XPort pin 6 which is configured to control the level of RS485_TXEN is connected to both transceivers The transmit section is enabled with a High signal on pin 3 U2 and the receive section is enabled with a Low signal on pin 2 U4 There is a jumper option J2 that permits RS485 RS422 Half Duplex or RS422...

Страница 14: ...DI RO D R DE DI RO CP1 TX RX TXDA Pin 7 RXDB Pin 4 SGND Pin 3 CP1 DE CP1 D R DI RO TX TXDA RXDB SGND D R DE DI RO RX CP1 TXDB Pin 6 TXDB RXDA Pin 5 RXDA 4000 ft Rt Rt Rg Rg Figure 2 RS422 Four Wire Interface Notice that 5 conductors are used two twisted pairs and a ground wire Also when the cable lengths are long and or the data rates are high the network must be terminated To terminate the networ...

Страница 15: ...n this configuration it is important to prevent more than one device from transmitting at the same time This is controlled by software and the communications protocol Note that the transmission line is terminated on both ends of the line but not at drop points in the middle of the line Termination is only required with high data rates and or long wire runs Note Do NOT install termination resistors...

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Страница 17: ...485 uses the Internet Protocol IP for network communications and the Transmission Control Protocol TCP to assure that no data is lost or duplicated and that everything sent to the connection arrives correctly at the target Other supported protocols include ARP UDP TCP ICMP Telnet TFTP AutoIP DHCP HTTP and SNMP for network communications and management TCP UDP and Telnet for connections to the seri...

Страница 18: ... Term jumpers on short transmission lines Remove these jumpers to remove the 120 Ohm resistors from the transmit and receive lines Note See the Application Notes on the product CD for more information about networks and termination procedures 2 3 Power Supply The NET485 can use any DC power source from 8VDC to 24VDC The current draw is determined by network activity and serial port communications ...

Страница 19: ...aseTX Bi color Left LED Full Half Duplex Bi color Right LED LEFT LED POWER LED Figure 6 Ethernet Jack Table 2 NET485 LED Functions Left LED Right LED Meaning Solid Amber 10BASE T Solid Green 100BASE Tx Blinking Amber Half Duplex Activity Blinking Green Full Duplex Activity NET485 User Guide 2 3 ...

Страница 20: ...ton on the Task Bar and select Run b Enter your CD drive letter colon backslash Launch exe e g D Launch exe To view the Quick Start Guide click on Quick Start Guide button To view the technical documents click on NET485 Documentation The technical manuals are in PDF format If you do not have Acrobat Reader installed you can install it from the CD To install Device Installer Java RE Microsoft NET F...

Страница 21: ...233_a pdf Comm Port Redirector Guide Provides information on using the Windows based utility to create a virtual com port Redirector_UG_800235_a pdf Web Enable User Guide Explains the steps to get your device Web enabled Web_Enabling_UG_800236_a pdf GPIO Interface Guide Introduction to the GPIO interface and a demo program GPIO_800237_a pdf UDP Configuration Guide How to use UDP to configure the u...

Страница 22: ...uto IP SMTP and HTTP Power Input 8VDC to 24VDC approximately 200ma LEDs 10Base T 100Base TX Activity Full half duplex Management Internal web server SNMP read only Serial login Telnet login Security Password protection Locking features optional Rijndael 128 bit encryption Internal Web Server Serves static web pages and Java applets Weight 1 7oz Material Case Flame Retardant Temperature Operating r...

Страница 23: ...mputers work together across platforms and programming languages From a business perspective Web services are used to reenable information technology so that it can change move and adapt like other aspects of a business They not only connect systems they can help connect people with the information they need within the software applications they are used to using and wherever they happen to be Dev...

Страница 24: ...t of options select DeviceInstaller The Device Installer main dialog box appears Figure 8 Device Installer Dialog Box Device Installer automatically locates and displays devices on the network To search for devices recently added to the network click the icon select Search from the Device menu or press the F5 key 3 1 4 Device Found Figure 8 shows a device found on the network with the IP addresses...

Страница 25: ...btain an IP address automatically button The IP Discovery Settings dialog appears Choose from DHCP BOOTP and Auto IP protocols to obtain the IP address Skip to Assignment on page 3 4 Enter the IP address the Subnet mask and the Default gateway in the IP Settings dialog box In the following example the new IP address is 172 20 206 150 Press the TAB key to advance to the next field The Subnet mask w...

Страница 26: ...shows the IP address of the selected unit Click the Ping button The results display in the Status window Click the Clear Status button to clear the window so you can ping the device again Note If you do not receive Reply messages make sure the unit is properly attached to the network and that the IP address assigned is valid for the particular network segment you are working with If you are not su...

Страница 27: ...ouble click the field type in the value and press Enter to complete This name is not visible on other PCs or laptops using DeviceInstaller Group Configurable field A group name to categorize the XPort Double click the field type in the value and press Enter to complete This group name is not visible on other PCs or laptops using DeviceInstaller Comments Configurable field Information about the XPo...

Страница 28: ...address to the XPort unit automatically Default True BOOTP Permits the Bootstrap Protocol BOOTP server to assign the IP address from a pool of addresses automatically Default True RARP Default False Auto IP Permits the XPort to generate an IP in the 169 254 x x address range with a Class B subnet Default True Subnet Mask Non configurable field Displays the XPort s current subnet mask Gateway Non c...

Страница 29: ... Installer Note Make note of the hardware MAC address You will need it to locate the XPort using DeviceInstaller Follow the instructions on the product CD to install and run DeviceInstaller 1 Click Start Programs Lantronix DeviceInstaller DeviceInstaller If the PC has more than one network adapter a message displays requesting the selection of a network adapter Select an adapter and click OK 2 Cli...

Страница 30: ...Obtain IP address automatically 3 Enter the following as necessary BOOTP Select Enable to permit the Bootstrap Protocol BOOTP server to assign the IP address from a pool of addresses automatically Enable is the default DHCP Select Enable to permit the Dynamic Host Configuration Protocol DHCP to assign a leased IP address to the XPort unit automatically Enable is the default AutoIP Select Enable to...

Страница 31: ...ult Gateway The gateway address or router allows communication to other LAN segments The gateway address should be the IP address of the router connected to the same LAN segment as the unit The gateway address must be within the local network 4 When you are finished click the OK button 5 On the main menu click Apply Settings 3 4 3 Ethernet Configuration You must specify the speed and direction of ...

Страница 32: ...king its status If the unit does not receive a response it drops that connection Enter a value between 0 and 60 seconds 0 disables keepalive Monitor Mode Bootup Select Disable to disable entry into the monitor mode using the yyy or xx1 key sequence at startup This field prevents the unit from entering monitor mode by interpreting the stream of characters that are received during the device server ...

Страница 33: ...or Manual and Modem Mode The unit does not accept a data connection from a remote device when the hostlist option is enabled To configure the XPort s host list 1 On the main menu click Hostlist 2 Enter or modify the following fields Retry Settings Retry Counter Enter the value for the number of times the XPort should attempt to retry connecting to the host list Retry Timeout Enter the duration in ...

Страница 34: ...ettings To configure the channel s serial settings 1 On the main menu click Serial Settings under Channel 1 to display the Serial Settings window 2 In the available fields enter the following information Channel 1 Disable Serial Port When selected disables communication through the serial port The serial port is enabled by default 3 12 NET485 User Guide ...

Страница 35: ... packet count low The alternate packing algorithm minimizes the packet count on the network and is especially useful in applications in a routed Wide Area Network WAN Adjusting parameters in this mode can economize the network data stream Disabled by default Idle Gap Time Select the maximum time for inactivity The default time is 12 milliseconds Match 2 Byte Sequence Use to indicate the end of a s...

Страница 36: ...on initiated from the network to the device The default is No At Time of Disconnect Select Yes to clear the output buffer when the network connection to or from the device is disconnected The default is No 3 When you are finished click the OK button 4 On the main menu click Apply Settings 3 7 1 Connection Settings TCP To configure a channel s TCP settings 1 On the main menu click Connection The Co...

Страница 37: ...e remote IP address and port after booting up Start Character If Active Connect is set to With Start Character enter the start character in this field Modem Mode Indicates the on screen response type when in Modem Mode if Modem Mode is enabled Endpoint Configuration Local Port Enter the local port number This is the one used by Comm Port Redirector Auto increment for active connect Select to auto ...

Страница 38: ... from the serial port to drop when modem_control_in transitions from a high state to a low state Hard Disconnect When set to Yes the TCP connection closes even if the remote site does not acknowledge the disconnect request With EOT Select Yes to drop the connection when Ctrl D or Hex 04 is detected Both Telnet Mode and Disconnect with EOT must be enabled for Disconnect with EOT to function properl...

Страница 39: ...ote port Enter 01 for directed or broadcast UDP Accept Incoming Select Yes to accept incoming UDP datagrams Local Port Enter the local port number Remote Port Enter the port number of the remote device Remote Host Enter the IP address of the remote device Device Address Table The table is enabled when Datagram Type is set to FD Enter values between 1 and 255 to identify units on the local network ...

Страница 40: ... the NET485 To configure the NET232 s email settings 1 On the main menu select Email The Email Settings window opens 2 Configure the following fields Server IP Address Enter the IP address of the mail server Server Port Enter the port number on the email server Domain Name Enter the email server s domain name Unit Name Enter the user name used by the XPort to send email messages Recipients Recipie...

Страница 41: ...trigger For the XPort there is only one channel Data Size Select the data size prompting the trigger Match Data Enter the data which when it appears in the communication stream prompts a trigger Note All of the conditions must match for the XPort to send an email notification Message Properties Message The subject line of the trigger event email to the specified recipient s Priority The priority l...

Страница 42: ...Monitors input using the 77F0 port or controls output by the 77F0 port Status LED 1 Indicates channel 1 status and extended diagnostics when status LED 3 is lit Flow Control Out CTS Allows for flow control on the connection with hardware handshaking You can set Pin 1 for CTS RS485 TxEnable Allows for control of the RS485 Transmit Enable signal CP0 MUST be set to RS485 Transmit Enable for NET485 3 ...

Страница 43: ...t Configuration tab in the Device Installer window or by starting a Telnet session in command mode Telnet Configuration using Device Installer Click the Telnet Configurarion tab When the window opens click the Connect button Go to Telnet Messages on page 3 22 3 12 1 Telnet Connection To configure the unit over the network establish a Telnet connection to port 9999 Note If you use the Telnet Config...

Страница 44: ...t TPI IP addr 0 0 0 0 DHCP BOOTP AutoIP no gateway set DHCP device name not set Security SNMP is enabled SNMP Community Name public Telnet Setup is enabled TFPT Download is enabled Port 77Feh is enabled Web Server is enabled Web Setup is enabled ECHO is disabled Encryption is disabled Enhanced Password is disabled Port 77F0h is enabled Channel 1 Baudrate 9600 I F Mode 4C Flow 00 Port 10001 Connect...

Страница 45: ...hannel 1 Match 00 00 Trigger input1 x Trigger input2 x Trigger input3 x Message Priority L Min notification interval 1 s Re notification interval 0 s Trigger 3 Serial trigger input disabled Channel 1 Match 00 00 Trigger input1 x Trigger input2 x Trigger input3 x Message Priority L Min notification interval 1 s Re notification interval 0 s Change Setup 0 Server 1 Channel 1 3 E mail 5 Expert 6 Secur...

Страница 46: ... is 0 0 5 0 the AutoIP and BootP options are disabled only DHCP is enabled The value 5 results from adding the binary equivalents of 0 and 2 This is the most common setting when using DHCP 3 13 2 Set Gateway IP Address The gateway address or router allows communication to other LAN segments The gateway address should be the IP address of the router connected to the same LAN segment as the unit The...

Страница 47: ...255 128 0 15 255 255 0 0 16 255 254 0 0 17 255 252 0 0 18 255 248 0 0 19 255 240 0 0 20 255 224 0 0 21 255 192 0 0 22 255 128 0 0 23 255 0 0 0 24 3 13 4 Change Telnet configuration password Setting the Telnet configuration password prevents unauthorized access of the setup menu via a Telnet connection to port 9999 or through Web pages The password is limited to 4 characters An enhanced password se...

Страница 48: ...e to change the DHCP name by specifying the last octet of the IP address When you use this method the DHCP name will be LTXYY where YY is what you chose for the last octet of the IP address If the IP address you specify is 0 0 0 12 then the DHCP name will be LTX12 This method will only work with 2 digit numbers 0 99 3 14 Channel 1 Configuration Serial Port Parameters This section describes how to ...

Страница 49: ...22 485 I F Modes are supported on XPort 03 with firmware 6 1 0 0 and above The following table demonstrates how to build some common Interface Mode settings Table 7 Common Interface Mode Settings Common I F Mode Setting Binary Hex RS 232C 8 bit No Parity 1 stop bit 0100 1100 4C RS 232C 7 bit Even Parity 1 stop bit 0111 1000 78 3 14 3 Flow Flow control sets the local handshaking method for stopping...

Страница 50: ...t operation may result The port number functions as the TCP UDP source port number for outgoing packets Packets sent to the unit with this port number are received to this channel The port number selected is the Incoming TCP UDP port and Outgoing TCP UDP source port Port 0 is used when you want the outgoing source port to change with each connection If the port number is set to 0 the initial value...

Страница 51: ...ever accept incoming 0 0 0 Accept with DTR Active 0 1 0 Always Accept 1 1 0 Response Nothing quiet 0 Character response C connect D disconnect N unreachable 1 Active Startup No active startup 0 0 0 0 With any character 0 0 0 1 With DTR Active 0 0 1 0 With a specific start character 0 0 1 1 Manual connection 0 1 0 0 Autostart 0 1 0 1 Hostlist 0 0 1 0 Datagram Type Directed UDP 1 1 0 0 Modem Mode No...

Страница 52: ...SCII 0x0D or a line feed 0x0A No blanks or space characters in the command string Between the first and last command string characters must be a full or partial destination IP address and may be a destination port number The IP address must be presented in standard dot decimal notation and may be a partial address representing the least significant 1 2 or 3 bytes of the remote IP address The perio...

Страница 53: ...ll through the table until it is able to connect to another IP in the hostlist Hostlist supports a minimum of 1 and a maximum of 12 entries Each entry contains the IP address and the port number The host list will be disabled for Manual Mode and for Modem Mode The unit will not accept a data connection from a remote device when the host list option is enabled Baudrate 9600 I F Mode 4C Flow 00 Port...

Страница 54: ...initiate a TCP connection because it will use UDP datagrams to send and receive data MODEM MODE In Modem Emulation Mode the unit presents a modem interface to the attached serial device It accepts AT style modem commands and handles the modem signals correctly Normally there is a modem connected to a local PC and a modem connected to a remote machine A user must dial from the local PC to the remot...

Страница 55: ...ING n n n n A remote device having IP address n n n n is connecting to this device 0 OK 1 Connected 2 Ring 3 No Carrier 4 Error Received commands must begin with the two character sequence AT and must be terminated with a carriage return character Any character sequence received not starting with AT will be ignored The unit will only recognize and process single AT style commands Compound AT comma...

Страница 56: ... x Makes a connection to an IP address x x x x and the remote port number defined within the unit ATH Hangs up the connection Entered as ATH ATS0 n Enables or disables connections from the network going to the serial port n 0 disables the ability to make a connection from the network to the serial port n 1 9 enables the ability to make a connection from the network to the serial port n 1 9 is inva...

Страница 57: ...y enabled Note There is no State LED on the NET485 Table 13 Disconnect Mode Options Disconnect Mode Option 7 6 5 4 3 2 1 0 Disconnect with DTR drop 6 1 Ignore DTR 0 Telnet mode and terminal type setup 1 1 Channel port password 2 1 Hard disconnect 3 0 Disable hard disconnect 1 State LED off with connection 4 1 Disconnect with EOT D 5 1 1 The NET485 will send the Terminal Type upon an outgoing conne...

Страница 58: ...onnection that is initiated from the device to the network 1 Clear with a connection initiated from the network to the device 1 Clear when the network connection to or from the device is disconnected 1 Output Buffer Network to Serial Clear with a connection that is initiated from the device to the network 1 Clear with a connection initiated from the network to the device 1 Clear when the network c...

Страница 59: ...en successive network segments containing data For alternate packing the default interval is 12 ms Trailing Characters In some applications CRC Checksum or other trailing characters follow the end of sequence character this option helps to adapt frame transmission to the frame boundary Send Characters If 2 Byte Send Character Sequence is enabled the unit interprets the sendchars as a 2 byte sequen...

Страница 60: ...er appears only if the channel port password option is enabled in Disconnect Mode see Error Reference source not found on page Error Bookmark not defined If the option is enabled you can set a password on the serial port 3 15 E mail Settings Note The XPort Device Server allows the circuit designer the option of using three I O pins for different purposes These are referred to as Configurable Pins ...

Страница 61: ...Setup A trigger event can occur by receiving two bytes of a specified sequence on the serial port If the serial sequence is set to 00 00 then it is disabled At the Serial Sequence prompt enter the ASCII Hex value Example A two byte sequence of 12 would be 0x31 0x32 Set all the configurable pins to X Don t Care so they are disabled If both the serial sequence and the configurable pins are disabled ...

Страница 62: ...r baud rates on the serial interface i e 460Kbps and 920Kbps Increasing CPU performance requires more power and lowers the unit s operating temperature The standard CPU performance mode supports up to 230400 baud Note If baud rates of 460Kbps or 920Kbps is set and the high performance mode disabled the operation of the serial channel would be out of the specified error tolerance thereby leading to...

Страница 63: ...t physical packet size a network can transmit for TCP and UDP Enter between 512 and 1400 bytes The default is 1400 bytes 3 16 9 Enable Alternate MAC If necessary enable the alternate MAC address if specified in the OEM setup record 3 16 10 Ethernet Connection Type The NET485 allows for the Ethernet speed and duplex to be manually configured Enter 0 for auto negotiation default To select the speed ...

Страница 64: ... This option allows you to change the SNMP Community Name on the unit This allows for ease of management and possibly some security If someone tries to violate security but doesn t know what community to connect to that person will be unable to get the SNMP community information from the unit The name is a string of 1 to 13 characters plus a null terminator 14 bytes total The default setting is pu...

Страница 65: ...National Institute of Science and Technology NIST as the Advanced Encryption Standard AES to be used by the US government The NET485 supports 128 192 and 256 bit encryption key lengths Note Configuring encryption should be done through a local connection to the serial port of the NET485 or via a secured network connection Initial configuration information including the encryption key is sent in cl...

Страница 66: ...s The Y Yes option allows you to set an extended security password of 16 characters for protecting Telnet and web page access 3 17 11 Disable Port 77F0 Hex Port 77F0 is a setting that allows a custom application to query or set the three NET485 configurable pins when they are functioning as general purpose I O GPIO You may want to disable this capability for security purposes The default setting i...

Страница 67: ...ion of unit as hex records 120 bytes SC Send Configuration Sets configuration of unit from hex records PI x x x x Ping Pings unit with IP address x x x x to check device status AT ARP Table Shows the unit s ARP table entries TT TCP Connection Table Shows all incoming and outgoing TCP connections NC Network Connection Shows the unit s current IP address RS Reset Resets the unit QU Quit Exits diagno...

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Страница 69: ...e is operational features This should only be done under the direction of technical support 5 1 2 Via Device Installer After copying the firmware to your computer use Device Installer to install it 1 Store the firmware in a subfolder on your computer 2 Start Device Installer and search the network for the device you want to upgrade 3 Select the desired unit and click the Upgrade icon or select Upg...

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Страница 71: ...to port 1 the connection should fail When you Telnet into port 9999 and do not press Enter quickly the device server reboots causing it to lose the IP address Telnet back to Port 1 Wait for it to fail then Telnet to port 9999 again Make sure you press Enter within 5 seconds When you Telnet to port 9999 the Press Enter to go into Setup Mode message displays However nothing happens when you press En...

Страница 72: ...e serial port you get no response Setup Mode via the serial port is NOT supported on the NET485 Setup Mode via the serial port is NOT supported on the NET485 The unit is able to receive data but it cannot transmit since the TXEN enable pin is not accessible to the boot firmware You can ping the device server but not Telnet to the device server on port 9999 There may be an IP address conflict on yo...

Страница 73: ...er and lower four bits are treated separately resulting in a two digit hexadecimal number in this case 4C Use the following table to convert values from binary to hexadecimal Decimal 0 Binary 0000 Hex 0 1 0001 1 2 0010 2 3 0011 3 4 0100 4 5 0101 5 6 0110 6 7 0111 7 8 1000 8 9 1001 9 10 1010 A 11 1011 B 12 1100 C 13 1101 D 14 1110 E 15 1111 F 7 1 2 Scientific Calculator Another simple way to conver...

Страница 74: ...Tables Click Hex The hexadecimal value displays 7 2 NET485 User Guide ...

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