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Sample program S7-1200 HyperTerminal TCP comunications

Created by: MrPaiva at: 10/15/2010 3:49 PM (16 Replies)

Rating (6)

Thanks 21

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17 Entries

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10/15/2010 3:49 PM	Rate (4)
MrPaiva Silver Member Joined: 6/29/2010 Last visit: 10/27/2022 Posts: 112 Rating: (63)	Hi, I and a college, Pegaia, mount a little sample program that sends ASCII characters to a PC with HyperTerminal from a S7-1200 by TCP communication. Follow there is the project, a picture with the HyperTerminal adjusts and the looks like in this software. Attachment S7 1200 - HyperTerminal - TCP.zip (48274 Downloads)
	Last edited by: MrPaiva at: 11/12/2012 7:33 PM Sugestions by Mr Kaulquappe. Last edited by: MrPaiva at: 9/28/2011 10:08 PM Last edited by: MrPaiva at: 4/6/2016 4:01:02 PM
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This contribution was helpful to 10 thankful Users Denilson Pegaia Paulo Picolo SelvakumaaR Samydeluxe houaga Mr huynhlam damballa yeliz08 rico100 felisuki

10/15/2010 3:56 PM	Rate (1)
MrPaiva Silver Member Joined: 6/29/2010 Last visit: 10/27/2022 Posts: 112 Rating: (63)	Hi All, At this project we use T_CON plus T_SEND and T_RCV blocks, but it is possible use only T_SEND_C and T_RCV_C.Both projects work the same way.

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This contribution was helpful to 3 thankful Users houaga Mr huynhlam Juan.Mechatronic

5/9/2013 2:16 PM	Rate (0)
Murali Rajendran Posts: 72 Rating: (2)	Hello Mr.Pavia This program is very helpful, i have one problem I'm sending the data from PLC to hyper terminal its show what I'm sent but while received data from hyper terminal to PLC its show sum erratic value here with i attached the image (error)file. Reg Murali.R Attachment RCV_ERROR.jpg (1979 Downloads)
Murali Rajendran Posts: 72 Rating: (2)
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5/9/2013 2:35 PM	Rate (1)
Juan.Mechatronic Posts: 98 Rating: (6)	I don´t know if I'm wrong, but When I'm sendin data from PLC to hyperterminal i use de "$" character to specify that I'll send special characters; in my case i used $R$L to make a <CR><LF> that correspond to write in a new line on hyperterminal (i.eCarriage Return and line feed commands). In your case that is RCV. I supose you can receive everything from hyperterminal, there's no filter for those characters, so it sends you $08 which correspond to BS (Backspace). I hope that it can make you an idea (sorry for my english)
Juan.Mechatronic Posts: 98 Rating: (6)
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This contribution was helpful to 2 thankful Users Murali Rajendran ChrisCV

8/2/2013 12:45 PM	Rate (0)
O_Moderator Diamond Member Joined: 4/24/2009 Last visit: 8/20/2024 Posts: 2682 Rating: (135)	New questions were splitted to 232 module to hyper terminal communiction between S71200 plc and labview through tcp/ip Best regards O_Moderator
	Tips&Tricks for the forum usage
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8/8/2013 4:14 PM	Rate (0)
CS Moderator Moderator Joined: 9/1/2005 Last visit: 3/10/2025 Posts: 4113 Rating: (195)	New question published by sapnanavreis split to a seperate thread with the subject S7-1200 HyperTerminal TCP comunications - unnable to connect to plc's ip add with port no 2000. . Best regards CS Moderator
	My Forum is the place to personalize your profile, track your topics, and maintain content that interests you. Best regards CS Moderator
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1/10/2014 4:00 PM	Rate (0)
MartynE Posts: 4 Rating: (0)	Hi to all, I'm sorry for my ignorance... I'm traying to be programmer, but i haven't got great results I must send to a printer the next message with a PLC S7-1200: LAYOUT RUN "c:1.LAY" INPUT OFF FORMAT INPUT "[","]","#" INPUT ON [6572222C#] PF PRINT KEY ON Using Hyperterminal to comunicate directly with the printer warks all good, so i tested the program posted by MrPaiva to simulate the comunication PLC-printer writing to the Hyperterminal of my PC. After some changes I've got a result but not desider at all: with the '$R$L', as said Juan.Mechatronic , I do the new linw correct, but as shows by the image I recive at the beginnig 2 characters that I don't whant. Anyone has any suggestions? Thank Thank you all in advance, Martyn Attachment Message uncorrect.jpg (1316 Downloads)
MartynE Posts: 4 Rating: (0)	Last edited by: MartynE at: 1/10/2014 4:03 PM Last edited by: MartynE at: 1/10/2014 4:03 PM
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1/10/2014 5:25 PM	Rate (0)
Kaulquappe Posts: 3093 Rating: (324)	Hello Martyn, did you define the send data as a string? If yes, a string always starts with two bytes length information. Just have a look at the online help of the format string. Regards, Kaulquappe
Kaulquappe Posts: 3093 Rating: (324)
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This contribution was helpful to 1 thankful Users Tresancos

1/10/2014 6:01 PM	Rate (0)
Juan.Mechatronic Posts: 98 Rating: (6)	Hey, That's right, be carefull when you use strings; if that's the case, try sending the message starting from the next bytes of the lenght information. When I was sending data from PLC, i had the same problems. Huggy_d1, Gave me this solution: huggy_d1 In your TSEND_C block DATA input, your send buffer is pointing to the first byte of the string. If your send block is using the string length, it is sending those 1st two bytes as character data (which often get ignored by hyperterminal), and chops off the last 2 characters you actually want to send. The Pointer should start at byte 2. P#DBn.DBX2.0 BYTE yy where n is your DB #, and yy is the max # of bytes defined for your string, 254 (the default). That should get rid of your error. For DB #, 254 max string length P#DB5.DBX2.0 BYTE 254 Post your results. You can find the threath on this link /tf/WW/en/Posts/89223#top Best regards
Juan.Mechatronic Posts: 98 Rating: (6)
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1/13/2014 10:11 AM	Rate (0)
MartynE Posts: 4 Rating: (0)	Hi, yes Kaulquappe, I use data as a string and I didn't know that a string always starts with two bytes length information. As said Juan.Mechatronic, I use a pointer that starts at byte 2 and the problem is resolved. Thanks to both, Martyn
MartynE Posts: 4 Rating: (0)	Last edited by: MartynE at: 1/13/2014 10:13 AM
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This contribution was helpful to 3 thankful Users Kaulquappe Juan.Mechatronic yeliz08

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