Example 1: Read N7:1, N7:2, N7:3 into IntegersRead[] table, offset for starting index is 2. Fig.1 Source data, MicroLogix 1500.

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1 Training Manual. Examples of OPTO22-AB SLC/Micrologix communications using DF-1 RS-232 over Ethernet encapsulation. Configurations and results. Author: Peter Tiagunov. Free Academic License. Example 1: Read N7:1, N7:2, N7:3 into IntegersRead[] table, offset for starting index is 2 ntparameters[0] =1* ntparameters[1] =7 (N7) ntparameters[2] =1 (First Element N7:1) ntparameters[3] =2 begin to write to controller's read table at index [2] ntparameters[4] =3 read 3 element(s) N7:1, N7:2, N7:3 ntparameters[5] =1* Reply Timeout 1 sec ntparameters[6] =0* Full-Duplex ntparameters[7] =31* ntparameters[8] =1 Integer or SLC Output or SLC Input Fig.1 Source data, MicroLogix Fig.2 Destination data, OPTO22.

2 Example 2: Read ST9:5 ST9:6 into StringsRead[] table, offset for starting index is 0 ntparameters[0] =1* ntparameters[1] =9 (ST9) ntparameters[2] =5(First Element ST9:5) ntparameters[3] =0 begin to write to controller's read table at index [0] ntparameters[4] =2 read 2 element(s) ST9:5, ST9:6 ntparameters[5] =1* Reply Timeout 1 sec ntparameters[6] =0* Full-Duplex ntparameters[7] =31* ntparameters[8] =5 String Fig.4 Source data, MicroLogix Fig.4 Destination data, OPTO22.

3 Example 3: Write value String Data into ST9:14, offset for starting index in StringsWrite[] table is 5 ntparameters[0] =1* ntparameters[1] =9 (ST9) ntparameters[2] =14(First Element ST9:14) ntparameters[3] =5 begin to read from controller's write table at index [5] ntparameters[4] =1 write 1 element(s) ST9:14 ntparameters[5] =1* Reply Timeout 1 sec ntparameters[6] =0* Full-Duplex ntparameters[7] =31* ntparameters[8] =5 String Fig.5 Source data, OPTO22. Fig.6 Destination data, MicroLogix Appendix A: Parameters table definitions, overview: Parameters (default values marked with * ): [0] -DF1 Half Duplex Slave Source ID (default 1*) [1] -SLC Data File Nr, Example of files: 0-output, 1-input, 7*-integer(N7), 8-float(F8), 9-string(ST9) [2] -File Nr. Starting Element, Examples: 1* -for N7:1, 7 -for N7:10, 20 -for ST9:20 etc. [3] -offset for starting index in controller's R/W Tables (default 0*) [4] -number of elements to access, for both SLC and controller (default 1*) [5] -Reply timeout (sec) from the slave SLC5/0x (default 1* sec) [6] -Communications Mode. 0* = Full-Duplex, -1 = Half-Duplex [7] -Half-Duplex, Station Nr 1770-KF2 Module (default 31*) [8] -controller's data type 1* = Integer or SLC Output or SLC Input, 2 = Float, 3 = Unsigned Integer, 4 = ASCII, 5 = String

4 Appendix B: Example of driver's chart in strategy: Fig.7 Strategy Chart. (Subroutines not included.) Appendix C: Micrologix 1500 Channel 0 configuration. Fig.8 Micrologix 1500 Channel 0/1 configured for operations with Lantronix UDS1100. Appendix D: Cables 1. If using CH0 (Micrologix 1100 and 1500: 1.1 PN 1761-CBL-PM02 (cable). 1.2 PN (DB9-DB25 adapter) 2. If using CH1 (Micrologix 1500): 2.1 DB9-DB25 Standard Modem to PC cable

5 Appendix E: Simplified Connection Diagram Overview. Note! Lantronix UDS1100 device server placed in the same panel where SLC/Micrologix is, and uses the same power source (+24VDC), unless PoE. Length of RS-232 cable is critical for 38.4k, thus shorter cable is better. PAC may be placed on significant distance from Lantronix. Same private, non-routable subnet is recommended for TCP/IP addressing. Appendix F: Driver Source code. Subroutines AB Protected Typed Logical Read.isb and AB Protected Typed Logical Write.isb are not included. //DF-1 SLC/Micrologix Communication Driver for OPTO22 PACs //Driver Chart //Copyright (C) 2010 Peter Tiagunov //This program is free software: you can redistribute it and/or modify //it under the terms of the GNU General Public License as published by //the Free Software Foundation, either version 3 of the License, or //(at your option) any later version. //This program is distributed in the hope that it will be useful, //but WITHOUT ANY WARRANTY; without even the implied warranty of //MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //GNU General Public License for more details. //You should have received a copy of the GNU General Public License //along with this program. If not, see < // OPTO22 PAC-Allen-Bradley SLC/Micrologix CH0/CH1 communication // using the DF1 protocol.opto 22 controllers acts as a master device // Stable, confirmed on: SNAP-PAC-R2, S1 (Rev.8.4a); LCE, ADS, M64 (Rev.7.2h). // SLC/Micrologix CH0/CH1 Configuration // //Driver: DF1 Full Duplex //Baud: 38.4K //Parity: NONE //Source ID: 1 //Control Line: No Handshaking //Error Detection: BCC //Embedded Responses: Auto Detect //Duplicate Packet Detect: check //ACK Timeout: 50 //NACK Retries: 3 //ENQ Retries: 3 ntslcxx_parameters[0]=1; // CH0/CH1 DF1 Half Duplex Slave Source ID ntslcxx_parameters[1]=7; //*7 Accessed Data File Number. SLC Example of default files: 0 -output, 1 -input, 7 -integer(n7), 8 -float(f8) ntslcxx_parameters[2]=0; // Element Number. Write to this Element Number within the File Number in Index 1 on the SLC5/0x. ntslcxx_parameters[3]=0; //*50 The index number to start at on the Table contained in the iocontrol strategy. ntslcxx_parameters[4]=0; //*1 Number of Elements. How many elements to access. ntslcxx_parameters[5]=1; // How long it will wait for a Reply (in seconds) from the slave SLC5/0x. ntslcxx_parameters[6]=0; // Communications Mode. 0 = Full-Duplex, -1 = Half-Duplex. ntslcxx_parameters[7]=31; // STS or Station Number of the Allen-Bradley 1770-KF2 DH or DH+ Asynchronous Interface Module. Half-Duplex Only. ntslcxx_parameters[8]=1; // iocontrol File Number. 1 = Integer or SLC Output or SLC Input, 2 = Float, 3 = Unsigned Integer, 4 = ASCII, 5 = String /***IMPORTANT!******IMPORTANT!******IMPORTANT!******IMPORTANT!******IMPORTANT!******IMPORTANT!*** Use Allen-Bradley DF1 Integration Kit R1.0c (R1.0d not tested) to add: 1../Master/AB Protected Typed Logical Read.isb 2../Master/AB Protected Typed Logical Write.isb Master folder subroutines for the SLC family of PLCs, the commands Protected Typed Logical Read and Protected Typed Logical Write have been implemented in both the master and slave subroutines. All these commands have been implemented to the element (word) level of addressing. Perform following adjustments: AB Protected Typed Logical Read.isb - BLOCK:END,Close Comm. comment: //inttemporary = CloseCommunication(Serial_Handle);

6 rename subroutine AB Protected Typed Logical Read to srabprotectedtypedlogicalread AB Protected Typed Logical Write.isb - BLOCK:END,Close Comm. comment: //inttemporary = CloseCommunication(Serial_Handle); rename subroutine AB Protected Typed Logical Write to srabprotectedtypedlogicalwrite The above adjustment is required to maintain socket open at all the time. This due to a difference between Serial and TCP/IP communication handles in OPTO22 PAC.*/ // check if communication established if (not(iscommunicationopen(chsslcxx_df1))) then /* ListenForIncomingCommunication(ch) 0 = Success. -10 = Invalid port. -36 = Invalid command. Use this command only with a TCP communication handle; for FTP or File communication handles, use Open Outgoing Communication instead. -47 = Open failed. Handle has already been opened = Driver not found. */ //nslcxx_sts=sendcommunicationhandlecommand(chsslcxx_df1, "set.to:1.0"); returns -53 nslcxx_sts=listenforincomingcommunication(chsslcxx_df1); //nslcxx_sts=sendcommunicationhandlecommand(chsslcxx_df1, "set.to:1.0"); returns -53 //if listen port just open or already been opened if (nslcxx_sts==0 or nslcxx_sts== -47) then /* AcceptIncomingCommunication(ch) 0 = Success -36 = Invalid command. Use this command only with a TCP communication handle; for FTP or File communication handles, use Open Outgoing Communication instead. -47 = Open failed. Handle has already been opened = Unknown driver on communication handle = Could not listen on socket = Could not accept on socket. No devices are currenlty attempting to connect on this port. */ //accept connecting client (Lantronix) nslcxx_sts=acceptincomingcommunication(chsslcxx_df1); if (nslcxx_sts==0 or nslcxx_sts== -47) then nslcxx_sts=sendcommunicationhandlecommand(chsslcxx_df1, "set.to:1.0"); if(nslcxx_sts==0)then //SetEndOfMessageTerminator(chsSLCxx_DF1,13); ClearCommunicationReceiveBuffer(chsSLCxx_DF1); nslcxx_error=5698; //client connected nslcxx_commsts=1;//communication link established nslcxx_error=7724; //Establish Controller's Connection Error nslcxx_commsts=0;//no communication link if (nslcxx_sts== -442) then nslcxx_error=7723; //Waiting for Controller's Connection nslcxx_commsts=0;//no communication link nslcxx_error=7724; //Establish Controller's Connection Error nslcxx_commsts=0;//no communication link //write if(sslcxx_cmd=="w")then if(srabprotectedtypedlogicalwrite(ntslcxx_parameters, ntslcxx_integerswrite, ftslcxx_floatswrite, stslcxx_stringswrite, chsslcxx_df1, nslcxx_transaction, nslcxx_error)==0) then //seccess if(nslcxx_runcounter < )then nslcxx_runcounter=nslcxx_runcounter+1; nslcxx_runcounter= ; sslcxx_cmd=""; //write complete //subroutine srabprotectedtypedlogicalwrite execution error nslcxx_error=7721; //read if(sslcxx_cmd=="r")then if(srabprotectedtypedlogicalread (ntslcxx_parameters, ntslcxx_integersread, ftslcxx_floatsread, stslcxx_stringsread, chsslcxx_df1, nslcxx_transaction, nslcxx_error)==0) then //seccess if(nslcxx_runcounter < )then nslcxx_runcounter=nslcxx_runcounter+1; nslcxx_runcounter= ; sslcxx_cmd=""; //read complete //subroutine srabprotectedtypedlogicalread execution error nslcxx_error=7722; DelayMsec(nSLCxx_Scan);