Technical Note #611 SIXNET Modem Interfaces to a network of Allen Bradley SLC 5/04 ABSTRACT: This technical note provides instructional tips for interfacing the SIXNET Industrial Telephone Modem with the Allen Bradley AI Configuration Software and Allen Bradley 500 Processors configured for DH-485 Communication Network. Key Handling Systems Inc. has created the following tutorial for interfacing the SIXNET Industrial Telephone Modem with Allen-Bradley AI Software and AB 500 Processors. This modem interface provides long distance communication between the operator and seven PLCs through an Allen-Bradley 1770-KF3 DH-485 Communication Interface Module. Diagnostics and troubleshooting can now be done from hundreds of miles away. This provides a great advantage to operators because problems can now be solved and corrected without having to travel to the PLC itself. Settings in the A-B AI Software Run the Allen-Bradley AI Software Package. The Main Menu Should Appear. To complete configuration, perform the following steps in order. PLC-500 Main Menu Step 1: Step 2: F9) Configure Program Parameters F1) Communication Hardware Configure Online Communications Hardware F1) Computer/Terminal Address: 1 (This device has to be at the same address with the 1770-KF3 DH-485 Communication Interface Module, and also be “Something Other than PLC Node”) F2) Interface Hardware Type: 5/03, 5/04 CH0, 1770-KF3, 1747-KE F3) Online wait for reply timeout: 15 Seconds F4) Communications Port: Com X (Com port of PC modem) F5) Baud Rate: 19,200 F6) Parity: None F7) Error Checking: BCC F8) Protocol: Full Duplex F9) Dial Modem: No CTL-F1) Modem Dial String: CTL-F2) Network Diagnostics (Dials Number & Connects to Remote PLC) CTL-F3) Run Terminal Utility Program: Go to this screen and type ATDT-(Phone#) after press ENTER SIXNET • Box 767 • Clifton Park, NY 12065 USA • +1 (518) 877-5173 • FAX +1 (518) 877-8346 • [email protected] TN611.DOC PAGE 1 REV: SEPT. 1998 When modem connects, use the <Escape> key to back-out of these windows. From the Main PLC-500 Menu: F3 - Go Online or F5-Utility Options ? F7-Network Diagnostics ? F2-Who Active- Active Station Identification PLC-500 Main Menu Step 3: F2) Offline Programming/Doc Step 4: F8) Display Step 5: F7) ChancFg Channel 0 Current Communication Mode: System Mode Driver: User Mode Driver: Write Protect: Mode Changes: Mode Attention Character: System Mode Character: User Mode Character: Edit Resource/File Timeout: Passthru Link ID: System DH-485 Master Generic ASCII Disabled Disabled \0x1b S U 60 0 Channel 1 System Mode Driver: Write Protect: Edit Resource/File Timeout: Passthru Line ID: Step 6: DH+ Disabled 60 0 F3) Ch0User Communication Driver: Generic ASCII Baud Rate: 1200 Parity: None Stop Bits: 1 Data Bit: 8 Delete Mode: Ignore RTS Off Delay (x20 ms): 0 Echo: DisabledRTS Send Delay (x20 ms): 0 XON/XOFF: Disabled Control Line… … .: No Handshaking Termination 1… ..: \0x0d Append 1… … … … … … … : \0x0d Termination 2… ..: \0xff Append 2… … … … … … … : \0xff SIXNET • Box 767 • Clifton Park, NY 12065 USA • +1 (518) 877-5173 • FAX +1 (518) 877-8346 • [email protected] TN611.DOC PAGE 2 REV: SEPT 1998 Step 7: F4) Ch0Sys Channel 0 Configuration Communication Driver: Baud Rate: Node Address Max Node Address Token Hold Factor Step 8: DH-485 19200 2-31 2-31 1 F5) Ch1Sys Channel 1 Configuration Communication Driver: Baud Rate: Node Address DH+ 57.6K 2-31 1770-KF3 Settings DH-485 Port 0 1 2 - 1 19 1 Node Address Baud Rate Diagnostic Command Execution RS-232 Port 3 4 5 6 7 8 - 19 0 0 0 0 0 9 Sub Menu 0 2-31 1 1 2 10 3 10 4 10 5 10 6 10 7 0 Node Address No Parity Full Duplex BCC Error Checking Disable Hand Shaking No Duplicate Message Detection Maximum Node Address Token Hold Factor Number of Retries DF1 ACK Timeout CTS to Transmit Delay End of Message to RTS Off Half Duplex Master Station Delay Group Number SIXNET • Box 767 • Clifton Park, NY 12065 USA • +1 (518) 877-5173 • FAX +1 (518) 877-8346 • [email protected] TN611.DOC PAGE 3 REV: SEPT 1998 SIXNET Modem Settings Use Windows HyperTerminal (or a similar program) to communicate to the modem. Important Note: When configuring the modem, make sure HyperTerminal is set to use the baud rate that you want the modem and PLC to communicate at. (19200 in this case). To check communication, type AT <Enter>. OK should appear. To Set up Modem: Type In: AT&F ATS0=1 ATS46=136 AT&K0 AT%E0 AT%C0 AT\N1 ATS23=60 AT+H0 AT&Y0 AT+MS=11,0,19200,19200 AT&W0 AT&V - This sets the modem to factory defaults - This sets the modem to auto-answer - This turns off Data Compression - This disables Flow Control - This disables Line Quality Monitor - This disables Data Compression - This selects asynchronous operation - This sets baud rate at 19200 - This disables voice support - This tells the modem to load profile 0 on power-up - This sets modem to modem speed at 19.2Kbps - This saves changes to profile 0 - Use this to verify your changes Loading Pre-Configured Settings into the VT-MODEM-1: The Modem settings above can also be loaded using the VT-Modem Setup Wizard included with the VTMODEM-#. Use the configuration file (ABSLC504.6ms) located on the latest SIXNET CD, your local SIXNET representative and the modem section in www.Get2Support.com. Open the VT-MODEM Setup Wizard. In the Load Configuration window click on the “Open Configuration File” button, and open the ABSLC504.6ms file (See Screen Shot 1). Select the communications port the SIXNET VTMODEM-1 is connected to (COM 2 in this case) in the COM Parameters window (See Screen Shot 2). Load the configuration into the modem using the “Write Configuration to the Modem” button in the Write Configuration Window (See Screen Shot 3). SIXNET • Box 767 • Clifton Park, NY 12065 USA • +1 (518) 877-5173 • FAX +1 (518) 877-8346 • [email protected] TN611.DOC PAGE 4 REV: SEPT 1998 Screen Shot 1 Screen Shot 2 SIXNET • Box 767 • Clifton Park, NY 12065 USA • +1 (518) 877-5173 • FAX +1 (518) 877-8346 • [email protected] TN611.DOC PAGE 5 REV: SEPT 1998 Screen Shot 3 Cable Wiring Connect the RS-232 serial port of the A-B 1770-KF3 DH-485 Communication Interface with the modem using the cable shown below SIXNET • Box 767 • Clifton Park, NY 12065 USA • +1 (518) 877-5173 • FAX +1 (518) 877-8346 • [email protected] TN611.DOC PAGE 6 REV: SEPT 1998