REXROTH IndraDrive Fc FCS01, Operating Instructions Manual

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Rexroth IndraDrive FCS01.1 Control Communication - Field Busses and Protocols
15-55
DOK-INDRV*--FCS01*****-IB01_EN-P
USIP Data Transfer - Master Telegram Times
The telegram times to be monitored depend upon the currently valid Baud
rate and the telegram length.
For the data format: 8E1, the following runtimes are applicable:
Baud
rate
[kBit / s]
PPO type Telegram
bytes
Start - break
time
[ms]
Minimum total
runtime
[ms]
Maximum total
runtime
[ms]
Response delay
time
[ms]
4800 PPO0 14 4,583 32,083 48,1 4,583
4800 PPO1 16 4,583 36,667 55 4,583
4800 PPO2 20 4,583 45,833 68,8 4,583
4800 PPO3 8 4,583 18,333 27,5 4,583
4800 PPO4 12 4,583 27,5 41,3 4,583
9600 PPO0 14 2,292 16,042 24,1 2,292
9600 PPO1 16 2,292 18,333 27,5 2,292
9600 PPO2 20 2,292 22,917 34,4 2,292
9600 PPO3 8 2,292 9,167 13,8 2,292
9600 PPO4 12 2,292 13,75 20,6 2,292
19200 PPO0 14 1,146 8,021 12 1,146
19200 PPO1 16 1,146 9,167 13,8 1,146
19200 PPO2 20 1,146 11,458 17,2 1,146
19200 PPO3 8 1,146 4,583 6,9 1,146
19200 PPO4 12 1,146 6,875 10,3 1,146
38400 PPO0 14 0,573 4,01 6 0,573
38400 PPO1 16 0,573 4,583 6,9 0,573
38400 PPO2 20 0,573 5,729 8,6 0,573
38400 PPO3 8 0,573 2,292 3,4 0,573
38400 PPO4 12 0,573 3,438 5,2 0,573
Fig. 15-78: Runtimes
The start-break time and the typical response delay time are defined on
the basis of the time it takes to transmit two data bytes. The maximum
permissible response delay time intended by the telegram is 20 ms.
The total runtime in the table is the flush telegram runtime,i.e. the stop bit
of the last character is immediately followed by the start character of the
next telegram. In practice, however, character delay times occur between
the bytes of a telegram. For this reason, factor 1.5 is applied for the
maximum permissible telegram runtime.
Maximum total runtime = 1.5 * flush telegram runtime
The interface driver software must check or bring about the compliance
with the following telegram parameters and trigger an error in case of the
runtime is repeatedly exceeded:
•
Telegram length data of the receipt telegram (LG)
•
Telegram format (start character / STX, check sum / BBC)
•
Character format (parity, start and stop bit)
•
Total runtime of the slave response
•
Response delay time (typical response period of two bytes, max. 20
ms)