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when I copy program on my CPU (315-2DP) I always receive SF

Created by: SK(2*A) at: 12/12/2011 9:15 AM (5 Replies)

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12/12/2011 9:15 AM	Rate (0)
SK(2*A) Posts: 140 Rating: (0)	Hello Dear, I am quite new to siemens programming. I have written a program, when I copy that program on my CPU (315-2DP) I always receive SF. I have read through Diganostic Buffer but still unable to find out whats the issue. I am using Accumulator registers quite often in my program but I have checked them, all are in correct sequence.I have pasted the buffer file below. Please suggest! Diagnostic buffer of module CPU 315-2 DP Order No./ Description Component Version 6ES7 315-2AH14-0AB0 Hardware 2 - - - Firmware V 3.0.3 Boot Loader Firmware expansion A 25.7.5 Rack: 0 Slot: 2 Serial number: S C-B1W511752011 Event 1 of 10: Event ID 16# 2521 BCD conversion error Affected register: accumulator 1 Requested OB: Programming error OB (OB121) Priority class: 1 Internal error, Incoming event 10:22:42.500 PM 06/03/1994 Event 2 of 10: Event ID 16# 2521 BCD conversion error Affected register: accumulator 1 Requested OB: Programming error OB (OB121) Priority class: 1 Internal error, Incoming event 10:22:42.499 PM 06/03/1994 Event 3 of 10: Event ID 16# 2521 BCD conversion error Affected register: accumulator 1 Requested OB: Programming error OB (OB121) Priority class: 1 Internal error, Incoming event 10:22:42.498 PM 06/03/1994 Event 4 of 10: Event ID 16# 2521 BCD conversion error Affected register: accumulator 1 Requested OB: Programming error OB (OB121) Priority class: 1 Internal error, Incoming event 10:22:42.498 PM 06/03/1994 Event 5 of 10: Event ID 16# 2521 BCD conversion error Affected register: accumulator 1 Requested OB: Programming error OB (OB121) Priority class: 1 Internal error, Incoming event 10:22:42.497 PM 06/03/1994 Event 6 of 10: Event ID 16# 2521 BCD conversion error Affected register: accumulator 1 Requested OB: Programming error OB (OB121) Priority class: 1 Internal error, Incoming event 10:22:42.497 PM 06/03/1994 Event 7 of 10: Event ID 16# 2521 BCD conversion error Affected register: accumulator 1 Requested OB: Programming error OB (OB121) Priority class: 1 Internal error, Incoming event 10:22:42.496 PM 06/03/1994 Event 8 of 10: Event ID 16# 2521 BCD conversion error Affected register: accumulator 1 Requested OB: Programming error OB (OB121) Priority class: 1 Internal error, Incoming event 10:22:42.495 PM 06/03/1994 Event 9 of 10: Event ID 16# 2521 BCD conversion error Affected register: accumulator 1 Requested OB: Programming error OB (OB121) Priority class: 1 Internal error, Incoming event 10:22:42.495 PM 06/03/1994 Event 10 of 10: Event ID 16# 2521 BCD conversion error Affected register: accumulator 1 Requested OB: Programming error OB (OB121) Priority class: 1 Internal error, Incoming event 10:22:42.494 PM 06/03/1994
SK(2*A) Posts: 140 Rating: (0)	Last edited by: O_Moderator at: 12/12/2011 11:55 AM new subject after splitting from /tf/WW/en/Posts/45772#top
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12/12/2011 9:58 AM	Rate (0)
UMENCHO Diamond Member Joined: 3/21/2006 Last visit: 7/12/2023 Posts: 10221 Rating: (1177)	Hello, So, can you attach that part of program concerning "BCD conversion"? Or give us details for the same. Best regards, Hristo MIhalev

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12/12/2011 10:02 AM	Rate (0)
hdhosseini Diamond Expert Joined: 1/28/2009 Last visit: 9/25/2023 Posts: 6822 Rating: (1349)	Dear Khyzer , Please check description of BTI instruction for possible reason of error in your Diagnostic buffre.Also check attachment for what I tested in PLCSIM. Same issue for BTD instruction . BTI Description BTI (decimal to binary conversion of a 3-digit BCD number) interprets the contents of ACCU 1-L as a three-digit binary coded decimal number (BCD) and converts it to a 16-bit integer. The result is stored in the low word of accumulator 1. The high word of accumulator 1 and accumulator 2 remain unchanged. BCD number in ACCU 1-L: The permissible value range for the BCD number is from "-999" to "+999". Bit 0 to bit 11 are interpreted as the value and bit 15 as the sign (0 = positive, 1= negative) of the BCD number. Bit 12 to bit 14 are not used in the conversion. If a decimal (4 bits) of the BCD number is in the invalid range of 10 to 15, a BCDF error occurs during attempted conversion. In general, the CPU will go into STOP. However, you may design another error response by programming OB121 to handle this synchronous programming error. Best regards, Hamid Hosseini Attachment CONVERSION.jpg (119 Downloads)
	Demo Channel on Youtube
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12/13/2011 12:49 AM	Rate (0)
SK(2*A) Posts: 140 Rating: (0)	UMENCHO Hello, So, can you attach that part of program concerning "BCD conversion"? Or give us details for the same. Best regards, Hristo MIhalev Hey, Thanks for your reply. Actually I am reading values from a MRU sensor through RS422 CP-341 communication module and converting those values in real. I feel that part has some issues. I am taking 12 parameter's values from the sensor. Please see below how I am converting one of those values into real. Below is the conversion of roll value±xx.xx, PLEASE REPLY ASAP! *********** ROLL ************** L "reDB2".RECV_TEXT[13] L '0' -I T "reDB2".RECV_TEXT[213] L "reDB2".RECV_TEXT[12] L '0' -I T "reDB2".RECV_TEXT[212] L "reDB2".RECV_TEXT[10] L '0' -I T "reDB2".RECV_TEXT[210] L "reDB2".RECV_TEXT[9] L '0' -I T "reDB2".RECV_TEXT[209] L "reDB2".RECV_TEXT[213] BTD DTR L 1.000000e-002 R T "TempDataS2".ROLL L "reDB2".RECV_TEXT[212] BTD DTR L 1.000000e-001 R L "TempDataS2".ROLL +R T "TempDataS2".ROLL L "reDB2".RECV_TEXT[210] BTD DTR L 1.000000e+000 R L "TempDataS2".ROLL +R T "TempDataS2".ROLL L "reDB2".RECV_TEXT[209] BTD DTR L 1.000000e+001 R L "TempDataS2".ROLL +R T "TempDataS2".ROLL L "reDB2".RECV_TEXT[8] L '-' ==I JC NEG4 JU end4 NEG4: L "TempDataS2".ROLL L -1.000000e+000 R T "TempDataS2".ROLL // covert m scale to m scale, doing nothing end4: L "TempDataS2".ROLL L 1.000000e+000 R T "DBtoHMI S2".Roll // to be in DB TO HMI T "DBtoHMI S2".RollLOG // to be in DB TO HMI
SK(2*A) Posts: 140 Rating: (0)	Last edited by: Khyzer at: 12/14/2011 2:26 AM
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12/14/2011 12:20 PM	Rate (0)
hdhosseini Diamond Expert Joined: 1/28/2009 Last visit: 9/25/2023 Posts: 6822 Rating: (1349)	Dear Khyzer, The first thing come in my mind is ""reDB2".RECV_TEXT[213]" is an invalid BCD number.It is much better to consult the manual of device you are connected to.Also you can provide us more information about telegram your are receiving : L "reDB2".RECV_TEXT[213] BTD DTR L 1.000000e-002 R T "TempDataS2".ROLL Try fllowing codes and check the result: L "reDB2".RECV_TEXT[213] ITD DTR L 1.000000e-002 R T "TempDataS2".ROLL This link would be worth reading: https://www.automation.siemens.com/tf/WW/en/Posts/61553#303108 Best regards, Hamid hosseini
	Last edited by: hdhosseini at: 12/14/2011 12:46 PM //New link added Demo Channel on Youtube
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12/15/2011 5:40 AM	Rate (0)
SK(2*A) Posts: 140 Rating: (0)	Hi Hosseini, I tried replacing BTD with ITD and in the simulator I am not getting any SF indication. However I will test the program later with the real sensor and let you know. The text"reDB2".RECV_TEXT[213]"that I am receiving is numerical Characters value for sensor's parameter's. Thanks for your suggestion!
SK(2*A) Posts: 140 Rating: (0)	Last edited by: Khyzer at: 12/15/2011 10:22 AM Last edited by: Khyzer at: 12/15/2011 5:40 AM
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