| Applies To: |
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| Summary: |
| I have a device that uses the Modbus protocol on a RS-485 serial link. I also have a device called a Lantronix Serial Server to act as a gateway between the ethernet and serial media. How do I setup a Lantronix Ethernet Server with Citect? |
| Solution: | ||||||||||||||||||||||||||||||||||
| 1. You can use Modbus over TCP/IP (see
Q2449 for background)
eg:
2. You need to set the IP address of the Lantronix Server. To do this connect to the console port with a PC running Hyper Terminal or equivalent and perform the following (the default password is 'system'): Lantronix MSS485 Version V3.5/5(980529) Type HELP at the 'Local_2> ' prompt for assistance. Username> Citect Local_2> set privileged Password> Local_2>> change bootp disable Local_2>> change rarp disable Local_2>> change ipaddress 192.168.1.248 Local_2>> change gateway 192.168.1.1 Local_2>> change domain "cit.com.au" Local_2>> change nameserver 192.168.1.1 Local_2>> change session limit 1 Local_2>> change speed 19200 Local_2>> change charsize 8 Local_2>> change stopbits 1 Local_2>> change parity none Local_2>> 3. Once the IP address is set you can Telnet to the Lantronix Server to change / view parameters eg: Lantronix MSS485 Version V3.5/5(980529) Type HELP at the 'Local_3> ' prompt for assistance. Username> Citect Local_3> set privileged Password> Local_3>> show port Port 1: Username: Physical Port 1 (Idle) Char Size/Stop Bits: 8/1 Baud Rate: 9600 Flow Ctrl: None Session Limit: 1 Parity: Even Modem Control: None Access: Remote Break Ctrl: Local Local Switch: None Start Character: None Forward: None Backward: None Port name: Port_1 Terminal Type: None Preferred Service: Characteristics: Verify Telnet Pad Sessions: 0 Current Session: None Input/Output Flow Ctrl: N/N DSR/DTR/CTS/RTS/CD: N/Y/Y/Y/Y Seconds Since Zeroed: 41 Framing Errors: 0 Accesses Local/Rem: 0/0 Parity Errors: 0 Flow Control Violations: 0 Overrun Errors: 0 Bytes Input: 0 Bytes Output: 103 Input Flow On/Off: 0/ 0 Output Flow On/Off: 0/ 0 Local_3>> show server MSS485 Version V3.5/5(980529) Uptime: 0:21:00 Hardware Addr: 00-80-a3-1d-04-ae Name/Nodenum: MSS_1D04AE/ 0 Ident String: Micro Serial Server Inactive Timer (min): 30 Serial Delay (msec): 30 Password Limit: 3 Session Limit: 1 Queue Limit: 32 Node/Host Limits: 50/20 LAT Circuit Timer (msec): 80 Keepalive Timer (sec): 20 Multicast Timer (sec): 30 Retrans Limit: 10 TCP/IP Address: 192.168.1.248 Subnet Mask: 255.255.255.0 Nameserver: 192.168.1.1 Backup Nameserver: (undefined) TCP/IP Gateway: 192.168.1.1 Backup Gateway: 192.168.1.10 Domain Name: syd.cit.com.au Daytime Queries: Enabled TCP Keepalives: Enabled DHCP Server: None Lease Time: 0:00 Load Address: aa-00-04-00-02-10 Prompt: Local_%n%P> Characteristics: Incoming Logins: Telnet (No Passwords Required) LAT Groups: 0 Local_3>> |
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