SystemBase SerieslGate SG-1010/232 Скачать руководство пользователя страница 26

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SerialGate User Guide



Serial

: DB9 for RS-232 and 5P Terminal Block for RS-422/485



Termination Resistor Switch:

Selection switch for termination resistor of RS-422/485



Reset

: SerialGate reboots if this button is pressed for less than 3 seconds. If pressed

for longer than 3 seconds, SerialGate will restore factory default settings.

SG-1020/ALL & SG-1020W/ALL (Left Side)

SG-1020/ALL & SG-1020W/ALL LED / RESET

LED

Status

Meaning

RDY

REEN

)

Blink(1s)

Normal Operation

Blink(0.2s)

Ready for restore factory default settings

During the Booting

Off

System Error

SRL1

(Red)

Blink

Serial #1 data being transmitted

SRL2

(Red)

Blink

Serial #2 data being transmitted

WIFI(Green)

WIFI Link up

Off

WIFI Link down

LAN

(Right Orange)

Network connected

Off

Network disconnected

Blink

LAN data being transmitted

LAN

(Left Green)

100baseT connection detected & LAN data transferred

Off

10baseT connection detected & LAN data transferred

Reset Button

ECHIPAMENTE PENTRU AUTOMATIZĂRI

Electric Film S.R.L. — Aleea Scarisoara 3, Apt.42 ▪ Cluj Napoca, Cluj ▪ 400445 ▪ www.electricfilm.eu

VÂNZĂRI ▪ 0364 710319 ▪ [email protected] ▪ SUPORT TEHNIC ▪ 0788 250583

cele mai sensibile

26/110

Содержание SerieslGate SG-1010/232

Страница 1: ...1b 2013 03 25 ECHIPAMENTE PENTRU AUTOMATIZ RI Electric Film S R L Aleea Scarisoara 3 Apt 42 Cluj Napoca Cluj 400445 www electricfilm eu V NZ RI 0364 710319 electricfilm eu gmail com SUPORT TEHNIC 0788...

Страница 2: ...Revision Copyright 2009 2011 SystemBase Co Ltd All rights reserved Website http www sysbas com Tel 02 855 0501 Fax 02 855 0580 16F Daerung Post Tower 1 212 8 Guro dong Seoul Korea For any inquiries or...

Страница 3: ...ALL Exterior 20 SG 1010W ALL LED RESET 21 SG 1020 232 Combo Exterior 23 SG 1020 232 Combo LED RESET 24 SG 1020 ALL SG 1020W ALL Exterior 25 SG 1020 ALL SG 1020W ALL LED RESET 26 SG 1040 1080 Exterior...

Страница 4: ...54 Save Reboot 210MHz Model Only 55 Connection 400MHz Model 56 Setup Menu 400MHz Model 57 Network Settings 400MHz Model 59 Serial Settings 400MHz Model 63 Wireless Settings 400MHz Model 68 SNMP Settin...

Страница 5: ...rector 97 TCP_Server TCP IP connection from PC to SerialGate 99 TCP_Client TCP IP Connection SerialGate PC 100 Pair Serial Line To Serial Line 101 Ch9 Appendix 103 Troubleshooting 103 Firmware Update...

Страница 6: ...administrators It is strongly recommended that anyone trying to apply use and maintain SerialGate read this document This guide deals with the hardware level integration issues and software level con...

Страница 7: ...menu guide for setting up the operation environment for SerialGate via web browser Configuration via Telnet Chapter 6 provides a list of commands for setting up the operation environment for SerialGa...

Страница 8: ...www sysbas com You can view and or download documents related to SerialGate as well as latest software and firmware updates Available resources are as follows Document Name Description SerialGate Spe...

Страница 9: ...om Any kind of inquiries requests and comments are welcome Lastly you can call us at the customer center for immediate support Our technical support team will kindly help you get over with the problem...

Страница 10: ...rious features of SerialGate make it a universal yet distinctive device server solution Here we present main features of SerialGate Others will explicitly appear throughout this guide Max 921 6Kbps se...

Страница 11: ...0 ALL SG 1020 SG 1020 ALL SG 1040 DC SG 1080 DC Series Power Cable 1pc for SG 1040 SG 1080 Series SG 1160 ALL CD Manual and utilities A Class Device This device is registered only for office use and b...

Страница 12: ...ricted to distance between PC and serial device To enable this feature a user should change its setting to TCP Server TCP Client mode or UDP Server UDP Client mode referring to Chapter 5 of this manua...

Страница 13: ...Power controller Gaming machines Scales Gas detection units Water pollution metering devices Data collection and distribution units Financial Building Automation Card readers Barcode scanners Kiosks P...

Страница 14: ...ification dimensions and other hardware related issues SG 1010 232 Combo Exterior SG 1010 232 Combo SG 1010 232 SG 1010 Combo ECHIPAMENTE PENTRU AUTOMATIZ RI Electric Film S R L Aleea Scarisoara 3 Apt...

Страница 15: ...s LAN port 8 pin RJ45 jack connects SerialGate to networking devices such as Ethernet card hub and router SG 1010 232 Combo LED RESET LED Status Meaning PWR Red On Power supplied to the device Off No...

Страница 16: ...Pressed for less than 3 seconds Restart SerialGate Pressed for more than 3 seconds Restore factory default settings of SerialGate and the device will automatically reboot ECHIPAMENTE PENTRU AUTOMATIZ...

Страница 17: ...fferent power at the sa me time power is applied at the same time as it may cause irreparabl e damage to the product if you do not Serial DB9 for RS 232 and 5P Terminal Block for RS 422 485 Terminatio...

Страница 18: ...Green On 100baseT connection detected LAN data transferred Off 10baseT connection detected LAN data transferred Reset button features Operation Result Pressed for less than 3 seconds Restart SerialGa...

Страница 19: ...ate TX TRXD Resistor 2 On Activate RX Resistor RS 422 Only Off Deactivate RX Resistor RS 422 Only Termination Resistor SW ECHIPAMENTE PENTRU AUTOMATIZ RI Electric Film S R L Aleea Scarisoara 3 Apt 42...

Страница 20: ...ect different power at the sa me time power is applied at the same time as it may cause irreparabl e damage to the product if you do not Serial DB9 for RS 232 and 5P Terminal Block for RS 422 485 Term...

Страница 21: ...eing transmitted LAN Left Green On 100baseT connection detected LAN data transferred Off 10baseT connection detected LAN data transferred Reset button features Operation Result Pressed for less than 3...

Страница 22: ...ivate TX TRXD Resistor 2 On Activate RX Resistor RS 422 Only Off Deactivate RX Resistor RS 422 Only Termination Resistor SW ECHIPAMENTE PENTRU AUTOMATIZ RI Electric Film S R L Aleea Scarisoara 3 Apt 4...

Страница 23: ...t if you do not Terminal block power connector for connection of terminal block power cable Reset button SerialGate reboots if this button is pressed for less than 3 seconds If pressed for longer than...

Страница 24: ...erial data transmitted Orange Blink Serial data received LAN Port Right Orange On Network connected Off Network disconnected Blink LAN data being transmitted LAN Port Left Green On 100baseT connection...

Страница 25: ...hub and router Terminal block power connector for connection of terminal block power cable Power connector DC12V power DC Adapter Jack and Terminal Block connections Terminal Block and DC Adapter Jac...

Страница 26: ...dy for restore factory default settings On During the Booting Off System Error SRL1 Red Blink Serial 1 data being transmitted SRL2 Red Blink Serial 2 data being transmitted WIFI Green On WIFI Link up...

Страница 27: ...ALL Bottom SW Meaning SW1 Resistor for Serial Port 1 SW2 Resistor for Serial Port 2 SW No Status Meaning 1 On Activate TX TRXD Resistor Off Deactivate TX TRXD Resistor 2 On Activate RX Resistor RS 422...

Страница 28: ...AC Version DC Version SG 1080 RS232 or Combo Version AC Version DC Version ECHIPAMENTE PENTRU AUTOMATIZ RI Electric Film S R L Aleea Scarisoara 3 Apt 42 Cluj Napoca Cluj 400445 www electricfilm eu V...

Страница 29: ...an 3 seconds If pressed for longer than 3 seconds SerialGate will restore factory default settings LED Operation status of SerialGate Next section describes the meaning of each LED display status WAN...

Страница 30: ...ange On Connected to network Off Disconnected to network Blink LAN data being transmitted WAN LAN Left Green On 100baseT connection detected LAN data transferred Off 10baseT connection detected LAN da...

Страница 31: ...ch LED display status WAN Main network port used when connecting SerialGate to networking devices such as Ethernet card hub and router LAN NAT SerialGate Bridge Switch SD MMC SD memory card works for...

Страница 32: ...range WAN LAN Front LED Orange On 100baseT connection detected LAN data transferred Rear LED Green Off 10baseT connection detected LAN data transferred Rear LED Green Reset button features Operation R...

Страница 33: ...S232 1 2 3 4 5 6 7 8 TxD RxD RxD GND TxD 1 2 3 4 5 6 7 8 TRxD GND TRxD Pin No RS 232 RS 422 RS 485 1 RTS TxD TRxD 2 DTR 3 RxD RxD 4 DSR RxD 5 TxD TxD TRxD 6 GND GND GND 7 DCD 8 CTS ECHIPAMENTE PENTRU...

Страница 34: ...l Duplex Pin No Signal Description 1 TXD Transmit differential data positive Output 2 TXD Transmit differential data negative Output 3 GND Ground 4 RXD Receive differential data positive Input 5 RXD R...

Страница 35: ...2 3 4 5 6 7 8 TRxD GND TRxD Pin No RS 232 RS 422 RS 485 1 DCD 2 RxD TxD TRxD 3 TxD RxD 4 DTR RxD 5 GND GND GND 6 DSR 7 RTS TxD TRxD 8 CTS ECHIPAMENTE PENTRU AUTOMATIZ RI Electric Film S R L Aleea Sca...

Страница 36: ...appropriate power input has been successfully supplied SerialGate will power on and start booting Although there is no power LED to check the status you can check by LEDs on the RJ45 Ethernet port LE...

Страница 37: ...168 0 223 SerialGate s default IP address is set to 192 168 0 223 In order to connect with this address you need to change network configurations so that your PC can connect to the IP 192 168 0 223 P...

Страница 38: ...connect to the device via Telnet or Web respectively you can modify and apply the IP address of serialgate via this program Now you are ready to connect to SerialGate There are three options to confi...

Страница 39: ...is username and password are used as authentication method for Telnet as well This means if username or and password has been modified from the web interface modified values have to be entered to conn...

Страница 40: ...tailed operation environment for serial communication SNMP Settings Configure detailed operation environment for SNMP Change Password Change ID and password for both Web and Telnet interface Update Fi...

Страница 41: ...ame page with modified values Please note that you have to Save Reboot in order to see these changes in effect Changes will be discarded if you do not save current settings SG 1010 232 Combo SG 1020 2...

Страница 42: ...t mask SerialGate is assigned to When line type is Static IP manually enter an appropriate subnet mask When line type is DHCP current subnet mask is displayed but it is not editable Gateway 192 168 0...

Страница 43: ...rd 99999999 A user can make his own account and register a number of SerialGate Please refer to more details in the website mentioned above Telnet Service Enable Enable or disable Telnet service If di...

Страница 44: ...ill see the modified values Please note that you have to Save Reboot in order to see these changes in effect Changes will be discarded if you do not save current settings SG 1010 232 Combo ECHIPAMENTE...

Страница 45: ...are separately selectable at the bottom of the page ECHIPAMENTE PENTRU AUTOMATIZ RI Electric Film S R L Aleea Scarisoara 3 Apt 42 Cluj Napoca Cluj 400445 www electricfilm eu V NZ RI 0364 710319 electr...

Страница 46: ...port is transferred untouched after the socket connection is established TCP Broadcast SerialGate works as a server accepting up to 5 simultaneous connections from socket clients Data transmitted from...

Страница 47: ...n A user can run own customized program In order to run it a user needs to ask for application development environment to SystemBase Interface RS232 RS422 RS485 For RS232 model interface is set to RS...

Страница 48: ...blished automatically disconnect the socket connection Valid from 0 to 32767 sec For example if the operation mode is set to TCP Server and Alive Check Time is configured to 10 TCP Server will listen...

Страница 49: ...s data to output buffer Option Auto 1 2 4 8 16 32 64 96 128 In Auto setting it controls depending on the set communication speed Trigger Level Rx Auto If there is more data over the setting value in s...

Страница 50: ...anagement Protocol SNMP support Options Disable Enable V1 2 Attribution ReadOnly SNMP V1 2 Attributes can read and write by SNMP Agent In order to read attributes only change the feature to ReadOnly I...

Страница 51: ...le is selected notify the System reset info Option Enable Disable Port connect notification Disable If Enable is selected notify the Serial Port opened info Option Enable Disable Port disconnect notif...

Страница 52: ...if you do not save current settings In case that a user forgot password press Reset button for less than 3 seconds to restore the settings back to factory default However please be aware that all oth...

Страница 53: ...ted firmware will be transferred to SerialGate when you click Start Update After the transmission is complete SerialGate will be automatically restarted to operate with the new firmware ECHIPAMENTE PE...

Страница 54: ...initial status and SerialGate will automatically reboot LAN Default IPAddress 192 168 0 223 If Factory Default is complete it shows the initialized IP address username and password as below and resta...

Страница 55: ...criptions Save and Reboot Reboots SerialGate after saving changes to Flash memory Reboot Only Reboots SerialGate without saving changes This option can be used to rollback the changes you have mistake...

Страница 56: ...password are used as authentication method for Telnet as well This means if username or and password has been modified from the web interface modified values have to be entered to connect to Telnet a...

Страница 57: ...g summary of your device On the left you will see a setup menu and you can navigate through these options ECHIPAMENTE PENTRU AUTOMATIZ RI Electric Film S R L Aleea Scarisoara 3 Apt 42 Cluj Napoca Cluj...

Страница 58: ...nment for SNMP Change Password Change ID and password for both Web and Telnet interface Update Firmware Update SerialGate s firmware Factory Default Restore all the factory default settings Save Reboo...

Страница 59: ...pply button If you don t want to change you need to click Cancel button If you change the IP address you must reconnect via changed IP address SG 1010 W ALL 1020 W ALL ECHIPAMENTE PENTRU AUTOMATIZ RI...

Страница 60: ...0 1080 1160 ECHIPAMENTE PENTRU AUTOMATIZ RI Electric Film S R L Aleea Scarisoara 3 Apt 42 Cluj Napoca Cluj 400445 www electricfilm eu V NZ RI 0364 710319 electricfilm eu gmail com SUPORT TEHNIC 0788 2...

Страница 61: ...ut it is not editable Gateway 192 168 0 254 Current default gateway SerialGate is assigned to When line type is Static IP manually enter an appropriate default gateway When line type is DHCP current d...

Страница 62: ...Enable or disable Telnet service If disabled you cannot connect to SerialGate via Telnet FTP Service Enable Enable or disable FTP service If disabled you cannot connect to SerialGate via FTP WEB Servi...

Страница 63: ...After changing values you need to click Apply button If you don t want to change you need to click Cancel button ECHIPAMENTE PENTRU AUTOMATIZ RI Electric Film S R L Aleea Scarisoara 3 Apt 42 Cluj Napo...

Страница 64: ...tween the socket and the serial port is transferred untouched after the socket connection is established TCP Broadcast SerialGate works as a server accepting up to 5 simultaneous connections from sock...

Страница 65: ...erter function Available for SG 1010 ALL User Application A user can run own customized program In order to run it a user needs to ask for application development environment to SystemBase Interface R...

Страница 66: ...UDP Client or Pair_Master mode set the IP address and the socket number to connect to Keepalive Check Time 0 After a certain amount of time passes without any communication after the socket connectio...

Страница 67: ...mmediate sending through SerialGate the server could be received a lot parts of divided packets If the latency time is not 0 SerialGate will wait for the time and check new data If there is new data S...

Страница 68: ...ange you need to click Cancel button If you use the same network between LAN and WIFI This environment is not working normally And so when you use the WiFi you only use the LAN for configuration ECHIP...

Страница 69: ...ss network Channel Auto Selects a frequency channel for wireless connection Option Auto 1 13 Auto Connect a channel specified in AP automatically In most cases this setting is used Value Specification...

Страница 70: ...1 Open System authentication SHARED Specifies IEEE 802 11 Shared Key authentication that uses a preshared WEP key WPA PSK Specifies WPA security Authentication is performed between the supplicant and...

Страница 71: ...ot be changed Subnet Mask 255 255 255 0 Sets Subnet Mask of a wireless network If the line Type is Static IP a user can enter a subnet mask address directly If line type is DHCP the current subnet mas...

Страница 72: ...ter changing values you need to click Apply button If you don t want to change you need to click Cancel button ECHIPAMENTE PENTRU AUTOMATIZ RI Electric Film S R L Aleea Scarisoara 3 Apt 42 Cluj Napoca...

Страница 73: ...s ReadOnly ReadWrite V3 Username Password serialgate administr ator Configure the Username and the password when use SNMP V3 The Password is at least 8 character string TRAP IP Port 0 0 0 0 16 2 Confi...

Страница 74: ...d press Reset button for less than 3 seconds to restore the settings back to factory default However please be aware that all other settings will be initialized and back to factory default Default use...

Страница 75: ...ferred to SerialGate when you click Start Update After the transmission is complete SerialGate will be automatically restarted to operate with the new firmware Then your browser is reloaded on the log...

Страница 76: ...0 1010 W ALL 1020 W ALL LAN Default IPAddress 192 168 0 223 10 10 1 1 SG 1040 1080 1160 WAN Default IPAddress 192 168 0 223 LAN Default IPAddress 10 10 1 1 If Factory Default is complete it shows the...

Страница 77: ...via web After reboot your browser is reloaded on the login page ECHIPAMENTE PENTRU AUTOMATIZ RI Electric Film S R L Aleea Scarisoara 3 Apt 42 Cluj Napoca Cluj 400445 www electricfilm eu V NZ RI 0364 7...

Страница 78: ...lnet 192 168 0 223 SerialGate Login serialgate Password 99999999 test_rtc s 2010 7 8 15 00 00 Set Current time Year Month Date Hour minute second test_rtc g setting time Get ioctl RTC Time 2010 7 8 15...

Страница 79: ...ce versa Factory default username serialgate Factory default password 99999999 def commands you can configure SerialGate s settings def help commands you can view current SerialGate s settings After c...

Страница 80: ...0 223 Display the current IP address If line type is Static IP manually enter an appropriate IP address If line type is DHCP it is not editable Instead current IP address is shown def mask Subnet mas...

Страница 81: ...able or disable SSH service If enabled you can connect to SerialGate via SSH def name SerialGate name Product Name Set the name of SerialGate Max 32 bytes def snmp enable disable Disable Enable or dis...

Страница 82: ...rm the Serial Port opened info def trap_disconnect enable disable Disable If Enable is selected inform the Serial Port Closed info Serial Commands You can set the communication and operation environme...

Страница 83: ...bps Set communication speed def port x data 5 6 7 8 8 Set the number of bits in each character size def port x stop 1 2 1 Set the number of stop bits def port x parity none odd even none Set parity bi...

Страница 84: ...en the Operation Mode is set to TCP Server ask for the username and password when the client tries to connect def port x loginname username None When the Operation Mode is set to TCP Server set the us...

Страница 85: ...e in Web Telnet or FTP 16 Characters at maximum System Commands Commands Descriptions def default Restore all settings to factory default Requires reboot for changes to take effect def apply Save and...

Страница 86: ...LCD is 16 Character 2 Line and four keys are to configure the operating environment The function of each key is as follows Key Function 1 Function 2 ESC Go to the top menu Enter Select the current va...

Страница 87: ...rating environment setting for each port Status Check the connection status of the port and device server s version information System Perform firmware upgrade or reset and initialization Verification...

Страница 88: ...IP Select option Enter Save the current option and go to the next menu IP Address 192 168 0 223 Increase the value of the cursor position Move cursor to the next space Enter Save the current option a...

Страница 89: ...col Disable Com_redirector TCP_Server TCP_Client TCP_Broadcast TCP_Multiplex UDP_Server UDP_Client Pair_Master Pair_Slave Com_Redirector Select option Enter Save the current option and go to the next...

Страница 90: ...until Main Menu comes up and if Main Manu is displayed press or until you see Status Then press Enter to change the details At anytime ESC is selected it moves to the top menu Menu Display Description...

Страница 91: ...3 4 5 6 7 8 9 0 1 2 3 4 5 6 Move the cursor to the port to be reset using keys and press Enter Then the corresponding port will be reset Factory Default Cancel and Yes are selectable with keys If a us...

Страница 92: ...ursor to the IP address value to be changed Using key a user can change the value After changing the IP address if a user selects Enter device server connects to the TFTP address downloads the firmwar...

Страница 93: ...enu If Yes selected that action is performed RS232 Signal RS422 Loopback RS485 Loopback Testing WAN Port Testing LAN Port Testing MMC Testing Reset Testing Console Testing RTC RS232 Loopback Change al...

Страница 94: ...ser selects yes option it starts Loopback test and prints out the result on LCD T e s t I n g R S 4 2 2 O O O O O O O O O O O O O O O O If there is nothing wrong it displays O or X otherwise RS485 Loo...

Страница 95: ...for the Ping test on network If a user selects yes option it tries Ping to 192 168 0 1 and prints out the result on LCD T e s t I n g L A N P o r t OK If there is nothing wrong it shows OK or Failed o...

Страница 96: ...ts If a user selects yes option it starts Loopback test and prints out the result on LCD T e s t I n g C o n s o l e OK If there is nothing wrong it shows OK or Failed otherwise Testing RTC It tests R...

Страница 97: ...edirector and set the following steps For installation please refer to Com Port Redirector manual enclosed in CD In the picture below IP address of SerialGate is 192 168 0 247 and the first serial por...

Страница 98: ...ge the setting in the first serial port of SerialGate as follows ECHIPAMENTE PENTRU AUTOMATIZ RI Electric Film S R L Aleea Scarisoara 3 Apt 42 Cluj Napoca Cluj 400445 www electricfilm eu V NZ RI 0364...

Страница 99: ...hen connecting from a PC to SerialGate As shown below change the Operation Mode to TCP_Server and confirm the socket number waiting for connection Check the communication speed of a serial device to b...

Страница 100: ...P address and socket number to be connected Check the communication speed of a serial device to be connected to serial port and set it to Com Specification ECHIPAMENTE PENTRU AUTOMATIZ RI Electric Fil...

Страница 101: ...ng for SerialGate 1 In order to perform Master features change Operation Mode to Pari_Master Check the communication speed of a PC and set it in Com Specification and also register Slave SerialGate s...

Страница 102: ...de to Pari_Slave and register the socket number to be connected in Local Socket Port ECHIPAMENTE PENTRU AUTOMATIZ RI Electric Film S R L Aleea Scarisoara 3 Apt 42 Cluj Napoca Cluj 400445 www electricf...

Страница 103: ...on Problems If you are using TCP IP make sure that your computer and SerialGate are on the sa me IP segment or can reach each other with a PING command from the host The I P address you assign to Seri...

Страница 104: ...devices If the wrong IP address is loaded check your network for DHCP server and make s ure that the server is not set up to load wrong IP addresses into SerialGate Troubleshooting Windows Problems I...

Страница 105: ...Connected to 192 168 0 223 220 Operation successful User 192 168 0 223 none serialgate Default Password 99999999 Default ftp bi ftp ha ftp put c sg bin 200 Operation successful 150 Ok to send data 22...

Страница 106: ...ft Windows XP Version 5 1 2600 C Copyright 1985 2001 Microsoft Corp C Documents and Settings xxx telnet 192 168 0 223 SerialGate login serialgate Default Password 99999999 Default upgrade sg bin FTP V...

Страница 107: ...RS 422 485 SG 1010w ALL 1 Port RS 232 RS 422 485 SG 1020 Series 2 Ports RS 232 or COMBO RS 422 485 SG 1020 ALL 2 Ports RS 232 RS 422 485 SG 1020w ALL 2 Ports RS 232 RS 422 485 SG 1040 Series 4 Ports...

Страница 108: ...ALL AC 100 245 VAC Free Volt Size SG 1010 Series SG 1020 Series 71 9 W 107 5 L 25 2 H mm SG 1010 ALL SG 1010W ALL 65 W 79 5 L 24 3 H mm SG 1020 ALL SG 1020W ALL 80 9 W 110 5 L 24 3 H mm SG 1040 DC Ser...

Страница 109: ...CTS DCD Port 2 TX RX RTS CTS SG 1010 ALL SG 1010W ALL TX RX DTR DSR CTS RTS DCD SG 1020 ALL SG 1020W ALL Port 1 TX RX DTR DSR RTS CTS DCD Port 2 TX RX RTS CTS SG 1040 DC Series SG 1040 Series SG 1080...

Страница 110: ...010W ALL 1 x Serial Port RS 232 RS 422 485 selectable WiFi SG 1020 RS232 2 x Serial Ports RS 232 only SG 1020 Combo 2 x Serial Ports RS 422 485 selectable SG 1020 ALL 2 x Serial Ports RS 232 RS 422 48...

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