Industry Online Support
Technical Forum
7/14/2008 9:54 AM | |
Joined: 7/17/2007 Last visit: 9/5/2024 Posts: 27 Rating: (0) |
Hello 1 We are using PCS7 v7 SP1 ES software, CPU 416-2 DP, SIMATIC ET 200M/LINK: 153-2BA02-0XB0 , HART modul: 331-7TF01-0AB0 and Micro Motion transmitter Model: 1700C13ACFYZZZ 2 We would like to use Hart communication to reset »mass total« variable of Micro Motion transmitter Sereies 1000 sending HART device specific command #146 with code 8. 3 We understand that we have to use SFC 58 and SFC 59 but we do not understandthe exact meaning of structure for command record (e.g. 80 81 for chanell 0).In Figure 2 seems that command is written from byte 2 to byte 10 if we refer to Figure 3 which describes the structure of the command record. Is this conclusion right? Here are our questions about command record referring to Figure 2: Byte 1: What does the Ext_Req_Control (byte 1in Figure 2) refer to? Byte 3-5:We would like to get address of Micro Motion with command 0, but we dont know the structure of receive record. Reffering to the Figure 5 in example, return record is written in DB length of 75 byte . Looking in hart universal commands for command #1 data in reply has only 5 bytes. (1 byte PV unit and 4 Bytes for Primary variable).What else is then written in this DB which has length 75 B? Byte 9: Which length is that? (Length of code? ) Where to put code? Between length and CheckSum Byte?
AttachmentFigures.zip (556 Downloads) |
Follow us on