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DB 0 of S5-155U CPU

Created by: Reymond at: 8/21/2012 6:12 PM (12 Replies)

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8/21/2012 6:12 PM	Rate (0)
Reymond Posts: 112 Rating: (0)	Dear Colleagues, Good day I will convert s5 programs but when I generate the AWL and going to compile it I got error as there is DB 0 on the code. I am using S5-155U, also I got L BS 120 what will be the equivalent of this in s7? Thank you in advance
Reymond Posts: 112 Rating: (0)
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8/22/2012 3:02 PM	Rate (1)
jklm Platinum Member Joined: 12/22/2006 Last visit: 1/25/2022 Posts: 1742 Rating: (309)	Hello, Data block DB 0 contains a list with the start addresses of all blocks in the user memory of the CPU. You will not need this DB in your S7 project. Memory organisation does not rely on DB0 anymore in S7 systems. Just skip DB0. L BS120 is an instruction accessing system data of the CPU. The CPU948 programming guidesays: System data RS 120 controls the system function "software protection". That also does not work that way anymore in Step7.
	Best regards jklm Suggestion was helpful? Feel free to rate it.
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8/26/2012 9:54 AM	Rate (0)
Reymond Posts: 112 Rating: (0)	Dear JKLM, Good day thank you for your reply this helps a lot. Another question how can I replace LIR 2 and TIR 0, are this just the same as L (Accumulator 2) and T (Accumulator 1)? Thank you for you response. Besr regards
Reymond Posts: 112 Rating: (0)
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8/28/2012 4:01 PM	Rate (0)
Simaticus Bronze Member Joined: 1/30/2007 Last visit: 6/3/2022 Posts: 262 Rating: (24)	Hi Beginner, LIR and TIR commands are direct access commands to the memory. For example LIR 1 in a cpu 928 or 948 means: access in memory the address of accu 1 and read the content to accu 1 low word. There is no direct way to replace these commands in Step7. In the S5 you usually start reading the start address of a data block out of db0 using a LIR command. After some checks (db exists and is long enough) you start accessing the data you are interested in the original data block, maybe organized in data sets. Sorry but you 'll need to write these blocks anew. There is no way to convert such blocks. Good luck

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9/6/2012 11:37 PM	Rate (0)
KaOst Posts: 17 Rating: (2)	Begginer Dear Colleagues, ... when I generate the AWL and going to compile it I got error as there is DB 0 on the code. .. The C DB0 is probably preceeded by DO MWx or DO DWx. This is an intirect adressing method and can be substituted in Step7 by OPN DB[MWx] or OPN DB[DBWx]. KaOst Edit: And if you want more help with the LIR / TIR commands, you must show us the 10-15 preceeding code lines.
KaOst Posts: 17 Rating: (2)	Last edited by: KaOst at: 9/6/2012 11:41 PM Last edited by: KaOst at: 9/6/2012 11:38 PM
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9/25/2012 5:02 AM	Rate (0)
Reymond Posts: 112 Rating: (0)	Hi, Here's the fc that uses the LIR and TIR FUNCTION FC 19 : VOID AUTHOR: _200 NAME: ANLAUF VAR_INPUT PROG :int; // PROG LAGE :int; // LAGE ZWLA :int; // ZWLA PROZ :int; // PROZ FREM :int; // FREM CPU :int; // CPU LINE :int; // LINE END_VAR VAR_TEMP conv_akku1 :dword; conv_akku2 :dword; conv_stw :word; conv_create_db : word; conv_number_of_dbb :word; conv_return_db :word; conv_ret_val :int ; END_VAR BEGIN NETWORK NETWORK JU M001; M009:T conv_akku1; TAK; T conv_akku2; L STW; T conv_stw; L conv_akku1; SLW 1; T conv_number_of_dbb; L 101; T conv_create_db; L conv_stw; T STW; L conv_akku2; L conv_akku1; CALL SFC22 ( LOW_LIMIT:= conv_create_db, UP_LIMIT := conv_create_db, COUNT := conv_number_of_dbb, RET_VAL := conv_ret_val, DB_NUMBER:= conv_return_db ); JU M002; M001:L #CPU; L 115; <>I; JC M003; L W#16#DE00; T MW 250; L W#16#E400; T MW 252; JU M004; M003:L #CPU; L 135; <>I; JC M005; JU M005; OPN DB 100;//RLC DB0 dati NOP 0; T MW 250; NOP 0; T MW 252; M004:L #PROG; T MW 240; L 0; >I; JC M006; L 1; T MW 240; JU M007; M006:L #PROG; L 48; <=I; JC M007; L 48; T MW 240; M007:L 101; T MW 254; M010:NOP 0; L MW 254; L MW 240; INC 100; >I; JC M008; L MW 254; SLW 1; L MW 252; +I; // LIR 0; // * Error in Line 5115 (FB 201): Command not defined. * L 0; <>I; JC M002; L MW 250; L 402; +I; // LIR 0; // * Error in Line 5123 (FB 201): Command not defined. * L 58; +I; T MW 242; L MW 254; L MW 242; // TIR 2; // * Error in Line 5130 (FB 201): Command not defined. * L 10; JU M009; M002:L MW 254; L 1; +I; T MW 254; JU M010; M008:L 150; T conv_akku1; TAK; T conv_akku2; L STW; T conv_stw; L conv_akku1; SLW 1; T conv_number_of_dbb; L 10; T conv_create_db; L conv_stw; T STW; L conv_akku2; L conv_akku1; CALL SFC22 ( LOW_LIMIT:= conv_create_db, UP_LIMIT := conv_create_db, COUNT := conv_number_of_dbb, RET_VAL := conv_ret_val, DB_NUMBER:= conv_return_db ); T conv_akku1; TAK; T conv_akku2; L STW; T conv_stw; L conv_akku1; SLW 1; T conv_number_of_dbb; L 11; T conv_create_db; L conv_stw; T STW; L conv_akku2; L conv_akku1; CALL SFC22 ( LOW_LIMIT:= conv_create_db, UP_LIMIT := conv_create_db, COUNT := conv_number_of_dbb, RET_VAL := conv_ret_val, DB_NUMBER:= conv_return_db ); L 160; T conv_akku1; TAK; T conv_akku2; L STW; T conv_stw; L conv_akku1; SLW 1; T conv_number_of_dbb; L 12; T conv_create_db; L conv_stw; T STW; L conv_akku2; L conv_akku1; CALL SFC22 ( LOW_LIMIT:= conv_create_db, UP_LIMIT := conv_create_db, COUNT := conv_number_of_dbb, RET_VAL := conv_ret_val, DB_NUMBER:= conv_return_db ); M005: NOP 0; NETWORK OPN DB 10; CALL FC 79; L 0; T DBB 59; L #PROG; L 0; ==I; JC M011; L #PROG; L 48; >I; JC M012; L #PROG; T DBW 66; JU M013; M011:L 1; T DBW 66; JU M013; M012:L 48; T DBW 66; M013: NOP 0; NETWORK L DBW 2; L 0; <>I; JC M014; L 1; T DBW 2; T MB 5; JU M015; M014:L DBW 2; L DBW 66; <=I; JC M016; L DBW 66; T DBW 2; T MB 5; JU M015; M016:L DBW 2; T MB 5; M015:CALL FC 32 ( PROG := MB 5 ); CALL FC 33 ( PROG := MB 5 ); CALL FC 35 ( PROG := MB 5 ); CALL FC 31 ( PROG := MB 5 ); L DBW 2; T MB 5; NETWORK L #LAGE; L 0; <>I; JC M017; JU M018; M017:L DBB 59; T MB 240; AN M 240.0; S M 240.0; L MB 240; T DBB 59; OPN DB 12; L #LAGE; L 32; <=I; JC M019; L 32; T MB 240; JU M020; M019:L #LAGE; T MB 240; T MB 241; M020:L 1; T MW 242; M021:L MW 240; T conv_akku1; TAK; T conv_akku2; L STW; T conv_stw; L MB 243; SLW 4; LAR1; L conv_stw; T STW; L conv_akku2; L conv_akku1; T DBW [ AR1, P#0.0 ]; L MW 242; L 1; +I; T MW 242; L 25; <I; JC M021; CALL FC 32 ( PROG := MB 5 ); CALL FC 33 ( PROG := MB 5 ); M018:OPN DB 10; NETWORK L #ZWLA; L 0; <>I; JC M022; JU M023; M022:L DBB 59; T MB 240; AN M 240.1; S M 240.1; L MB 240; T DBB 59; M023: NOP 0; NETWORK L #PROZ; L 0; ==I; JC M024; L #PROZ; T DBW 68; L DBB 59; T MB 240; AN M 240.2; S M 240.2; L MB 240; T DBB 59; M024: NOP 0; NETWORK L #FREM; L 0; ==I; JC M025; L DBB 59; T MB 240; AN M 240.3; S M 240.3; L MB 240; T DBB 59; JU M026; M025:L DBB 59; T MB 240; A M 240.3; R M 240.3; L MB 240; T DBB 59; L DBB 58; T MB 208; A M 208.1; R M 208.1; L MB 208; T DBB 58; M026: NOP 0; NETWORK L #LINE; L 0; ==I; JC M027; TAK; T DBW 48; L 100; T conv_akku1; TAK; T conv_akku2; L STW; T conv_stw; L conv_akku1; SLW 1; T conv_number_of_dbb; L 13; T conv_create_db; L conv_stw; T STW; L conv_akku2; L conv_akku1; CALL SFC22 ( LOW_LIMIT:= conv_create_db, UP_LIMIT := conv_create_db, COUNT := conv_number_of_dbb, RET_VAL := conv_ret_val, DB_NUMBER:= conv_return_db ); JU M028; M027:L W#16#0; T DBW 48; M028: NOP 0; NETWORK L W#16#0; T MW 194; A M 4.0; R M 4.0; A M 3.5; R M 3.5; OPN DB 10; T DBW 20; T DBW 22; T DBW 24; T DBW 26; T DBW 28; T DBW 30; T DBW 32; T DBW 34; T DBW 36; T DBW 38; T DBW 160; T DBW 162; T DBW 164; T DBW 170; T DBW 172; T DBW 174; T DBW 176; T DBW 178; T DBW 180; T DBW 182; T DBW 184; T DBW 186; T DBW 188; T DBW 190; T DBW 192; T DBW 194; T DBW 196; T DBW 198; NETWORK L S5TIME#12s; T DBW 116; L S5TIME#40ms; T DBW 118; OPN DB 11; L 0; T DBW 30; OPN DB 10; A M 0.0; AN M 0.0; SD T 118; SD T 119; SD T 120; SD T 122; L W#16#0; T MB 0; T MB 2;
Reymond Posts: 112 Rating: (0)
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9/28/2012 9:26 AM	Rate (1)
Simaticus Bronze Member Joined: 1/30/2007 Last visit: 6/3/2022 Posts: 262 Rating: (24)	Hi Beginner, reading this function you see that there 's been a lot of program conversion done by the S5 S7 converter. Hence i'd like to see the original S5 function block. In general this function seems to check if some data blocks are available in the cpu. If not they seem to be created automatically. Good luck

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7/1/2014 4:38 PM

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vperezb

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Hi Simaticus,

I'm having the same issues than you were on some time ago, years indeed.

I am migrating from S5 to S7, 115U CPU 9446 to S7-300, and the convertion returns the next routine, here you have the S5 code and the convertion returned for the tool. But still have some code to convert.

Could you help me?

I understand that BS or RS are Status words, but can you tell something more about this covertion?

A DB 10

L DL 2

L KF +115

><F

SPB =M001

L BS 120

L KM 00000000 00111000

T BS 120

L KF +1

T BS 100

M001: BE

OPN DB 10

L DBB 4

L 115

<>I

JC M001

// L BS 120;

// *** Error in Line 11913 (FB 2): Invalid operator. ***

L 2#111000

// T BS 120;

// *** Error in Line 11917 (FB 2): Invalid operator. ***

L 1

// T BS 100;

// *** Error in Line 11920 (FB 2): Invalid operator. ***

M001: NOP 0

Thank you very much in advance.

Regards,

vperezb

7/1/2014 7:10 PM	Rate (0)
TIBI68 Gold Member Joined: 12/1/2009 Last visit: 10/27/2024 Posts: 672 Rating: (147)	Dear vperezb, thedescription of the system dataarea can be found in thismanual. https://support.automation.siemens.com/WW/llisapi.dll?func=cslib.csinfo&lang=en&objid=1085937&caller=view SD 120 at4-6 page 120 SD100 at 7-21 page 191 Best Regards.
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This contribution was helpful to 2 thankful Users vperezb meeda

7/2/2014 11:01 PM	Rate (0)
vperezb Posts: 24 Rating: (0)	Thank you very much, TIBI68! I am still processing your info, it takes time to me to understand it. It is a verydark part of the S5 program.Sorry for not answer you before. Thanks again, vperezb
vperezb Posts: 24 Rating: (0)
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This contribution was helpful to 1 thankful Users TIBI68

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Created by: Reymond at: 8/21/2012 6:12 PM (12 Replies)

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Last edited by: KaOst at: 9/6/2012 11:41 PM

Last edited by: KaOst at: 9/6/2012 11:38 PM

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