HEIDENHAIN TNC 335 Technical Manual - Manual (Page 508)

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TNC 360 8-1
Data Interface – Contents 8
1 Introduction 8-3
1.1 Principles of data transfer 8-4
1.1.1 Serial/parallel 8-4
1.1.2 Asynchronous data format 8-5
1.1.3 Checking data 8-7
1.1.4 Data transfer rate 8-8
1.2 Handshaking 8-9
1.2.1 Hardware handshaking 8-9
1.2.2 Software handshaking 8-9
2 TNC data interfaces 8-10
2.1 General 8-10
2.2 RS-232-C/V.24 interface 8-10
2.2.1 Hardware 8-10
2.2.2 Signal levels 8-11
2.2.3 Signal designation 8-11
2.2.4 Pin layouts 8-13
2.3 Data interface functions 8-14
2.3.1 Saving/reading files 8-14
2.3.2 Output to external devices 8-15
2.3.3 Reading in and simultaneously executing programs (DNC operation) 8-15
2.3.4 Communication between TNCs 8-15
2.4 Data transmission protocols 8-15
2.4.1 Standard transmission protocol 8-16
2.4.2 Data transfer with Block Check Character (BCC) 8-17
2.5 Configuration of the interface 8-22
2.5.1 Selection of the interface 8-22
2.5.2 Freely configurable interfaces 8-22
2.6 External programming 8-28
2.7 Interfacing with other equipment 8-28
3 Standard Data Transmission Protocol 8-29
3.1 General information 8-29
3.1.1 Calling the program directory 8-29
3.1.2 Outputting a selected program 8-31
3.1.3 Outputting all programs 8-31
3.1.4 Reading in selected program 8-31
3.1.5 Reading in all programs 8-33
3.1.6 Reading in an offered program 8-34