Manual Absolute Encoder with RS485 – SLIN interface Baumer IVO GmbH & Co. KG Dauchinger Strasse 58-62 DE-78056 Villingen-Schwenningen Phone +49 (0)7720 942-0 Fax +49 (0)7720 942-900 info.de@baumerivo.com www.baumer.com 05.11 · 174.02.054/3 Subject to modification in technic and design. Errors and omissions excepted.
Contents Page 1. Introduction 3 1.1. 1.2. 3 3 Scope of delivery Product assignment 2. Safety and operating instructions 4 3. SLIN protocol 5 3.1. 3.2. 3.3. 5 5 7 Technical data Data transmission Check sum Manual_RS485_SLIN_BIDE_EN.doc 04.05.11 2/7 Baumer IVO GmbH & Co.
Disclaimer of liability The present manual was compiled with utmost care, errors and omissions reserved. For this reason Baumer IVO GmbH & Co. KG rejects any liability for the information compiled in the present manual. Baumer IVO nor the author will accept any liability for direct or indirect damages resulting from the use of the present information. At any time we should be pleased receiving your comments and proposals for further improvement of the present document. 1. Introduction 1.1.
2. Safety and operating instructions Supplementary information • This manual is intended as a supplement to already existing documentation (e.g. catalogue, data sheet and assembly instruction). • The manual must be read without fail before initial commissioning of the equipment. Intended purpose of the equipment • The encoder is a precision measurement device.
3. SLIN protocol 3.1. Technical data • • • • • • • • • bus interface according to RS485 linear bus topology max. 8 bus users, selectable encoder address standard transmission rates: 9.6 kBaud, 19.2 kBaud and 115.2 kBaud bus access according to master / slave communication variable length of telegram data transmission asynchronous and half-duplex UART character format defined in line with IEC FT1.2 standard.
2. Encoder response, data byte 1 The response comprises 11 UART character bits together with the first 7 data bits: • 1 start bit • 7 data bits • 1 control bit (low), identification encoder position data • 1 stop bit The above data words are being transmitted subsequently until no more relevant data are available. 3.
3.3. Check sum Position data are added up to equal the check sum. Completed by address and control bit, the value configures the encoder control word (footer word). M_CHECK_SUM: CLR C MOV A,RESPONSE_SLIN_BYTE1 ADD A,RESPONSE_SLIN_BYTE2 ADD A,RESPONSE_SLIN_BYTE3 ADD A,RESPONSE_SLIN_BYTE4 ; configure control word ANL A,#70h ORL A,TLNADR SETB ACC.3 SETB ACC.7 MOV CONTROL_WORD,A Manual_RS485_SLIN_BIDE_EN.doc 04.05.11 ; ; 1. byte position data ; 2. byte position data (if relevant) ; 3.
