User manual TOSHIBA 7-SERIES SERIAL COMMUNICATIONS

[. . . ] 7-Series Serial Communications User Manual Document Number: 53840-001 Date: August, 2003 About This Manual This manual was written by the TOSHIBA Technical Publications Group. This group is tasked with providing technical documentation for the 7-Series product line. Every effort has been made to provide accurate and concise information to you, our customer. Email your comments, questions, or concerns about this publication to Jay. Williams@TIC. TOSHIBA. COM. Contacting TOSHIBA's Customer Support Center TOSHIBA's Customer Support Center can be contacted to obtain help in resolving any 7-Series system problem that you may experience or to provide application information. [. . . ] 16. 22 Transmission Format Serial Comm User Manual 32-bit Binary Mode Transmission Format This description applies to the message contents that are different from the 16-bit ASCII mode only (e. g. , the addition of the "L" command and the 32-bit of data capacity). Computer to ASD Communication (32-bit binary) Normal Processing Optional in a communication pair. 52H(R) Command is excluded. 1 "/" (2FH) ASD-NO 1 byte "L" (4CH) CMD 1 byte Communication Number 2 bytes 2 DATA 4 bytes SUM 1 byte Checksum Range Required 1. 2. 4CH (L) (1 byte) -- 32-bit access indicator code. DATA (4 bytes) -- Write-in data (valid only for 57H (W) and 50H (P) command). 00000000H to FFFFFFFFH (data range is checked). ASD to Computer Communication (32-bit binary) Normal Processing Optional 1 "/" (2FH ) ASD-NO 1 byte "L" (4C H) CMD 1 byte Communication Number 2 bytes 2 DATA 4 bytes SUM 1 byte Checksum Range Required 1. 4CH ("L") (1 byte). 32-bit access indicator code (data is returned in upper case if the ASD has tripped). Command 52H (R) returns the read data and commands 57H (W) and 50H (P) to return the written data. Error Processing Same as the return error processing of Error Processing on pg. 20. Serial Comm User Manual Transmission Format 23 2. DATA (2 bytes) -- Data 00000000H to FFFFFFFFH. 32-bit Parameters Note: This section excludes Acceleration/Deceleration Times and Motor Constants 1 & 2. When attempting to write or read a parameter that exceeds the 16-bit range (FFFFH), a mode error occurs. When the range of a parameter setting that is to be read from or written to is signed (±) and it exceeds the 16-bit range, the ASD performs the following data conversion: When writing negative data (the top bit is 1), the upper word is expanded to 1. When writing positive data (the top bit is 0), the upper word is expanded to 0. When reading data the conversion is reversed (the expansion factor is removed and set to the top bit). Example When the signed frequency is communicated in the 16-bit mode, the valid range is restricted between 0 Hz and 327. 6 Hz (from 0000 to 7FFF) and between -0. 01 Hz and -327. 68 Hz (from FFFF to 8000). Example -- 80 Hz (FFFFE0C0H) Read/write 16-bit mode. 1 1 1 0 0 0 0 0 1 1 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 1 1 0 0 0 0 0 0 Internal Data of ASD. Figure 3. Example -- 80 Hz (00001F40H) Read/write 16-bit mode. 0 0 0 1 1 1 1 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 0 1 0 0 0 0 0 0 Internal Data of ASD. 24 Transmission Format Serial Comm User Manual Communication Methods Broadcast Communication Mode The broadcast communication mode can transmit a command (write data) to multiple ASDs with one message. Only the write (W, P) commands are valid. The read (R, G) commands are not valid in the broadcast mode. All ASDs subject to normal mode communication are subject to a broadcast communication. These are ASD numbers 0 to 99 (00H - 63H) in the ASCII mode and 0 to 63 (00H - 3FH) in the binary mode. The ASDs are constrained to prevent transmission data collisions. If two or more ASDs have identical ASD numbers in the same network the data from these ASDs will collide. Do not duplicate ASD numbers in the same network. In the ASCII mode, broadcast communication can be executed by adding an "*" to the ASD number transmitted from the host. The "*" plays the role of a wild card that assigns an arbitrary number from 0 to 9. To return the data the "*" is converted to a "0" and the ASD that has the "0" will take the priority and return the data. [. . . ] Are the baud rate, parity bit, and bit length uniform in the communication line?Is the written data within established parameters? Reference Communication Parameters on pg. 27, and Transmission Waittime Setting on pg. Communications Commands and Monitoring on pg. [. . . ]