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A dialog window of communication line configuration - Protocol parameters tab.
They influence some optional protocol parameters.
The following line protocol contains the following parameters are defined:
| Parameter | Meaning | Unit / size | Default value |
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| Siemens Simatic rack number. | 0 to 7 | 0 |
| Siemens Simatic slot number. | 0 to 31 | 0 |
Connection Resource (hex) | Connection resource, it inputs as MSB byte to calculation of the value of Remote TSAP at initialization of ISO Connection-request.
See description of parameter Use long TSAP. | 0x0 to 0xFF | 3 |
| ISO Local TSAP (Transport Service Local Point). Source TSAP value at initialization of ISO Connection-request.
See description of parameter Use long TSAP. | 0x0 to 0xFFFF | 0x1000 |
| ISO Source Reference. Value of SRC-REF at connection of ISO Connection-request. | 0 to 65535 | 1 |
| Enables a long format of local and remote TSAP which is sent during connection setup phase.
Short TSAP is 2 bytes long.
Short local TSAP has following format:Short remote TSAP has following format:Long local TSAP is 28 bytes long. Last 2 bytes are higher and lower byte of parameter Local TSAP
Full remote TSAP is 28 bytes long and it contains: | - | False |
| MPI/Profibus address sent as a part of Remote TSAP, if parameter Use long TSAP is set to True | 0 to 126 | 1 |
S7 Subnet ID-part 1 (hex) | S7 subnet address sent as a part of Remote TSAP, if parameter Use long TSAP is set to True | 0x0 to 0xFFFF | 0 |
S7 Subnet ID-part 2 (hex) | S7 subnet adresa sent as a part of Remote TSAP, if parameter Use long TSAP is set to True | 0x0 to 0xFFFF | 0 |
ISO TPDU Size Variable Parameter | Maximum required size of ISO TPDU. The parameter value at initialization of ISO Connection-request. | 8192, 4096, 2048, 1024, 512, 256 or 128 bytes | 1024 bytes |
Nr. of Parallel Network Threads | Maximum parallel communication threads. Increase value if there is a request on more data read from device in shorter time. | 1 to 4 | 1 |
| Required time of one data reading cycle. | ms | 1000 ms |
| Maximal wait time on reply from other device. | ms | 2500 ms |
| Delay which is used before sending a data request. When high data transfer rate is required, set 0 ms. | sec.ms | 20 ms |
| Delay before reconnection to other device if the connection has failed or some communication error has occurred. | sec.ms | 2 sec |
| When Timeout passes and communication error occurs in all threads, a communication error status is set on the stations. FALSE state is set on the communication line. | sec.ms | 20 sec |
| Maximum PDU in bytes at S7 communication with other device. | 240, 480, 960 bytes | 480 bytes |
| Setting Tcp No Delay parameter causes low level socket option TCP_NODELAY being set, thus turning off default packet coalesce feature. | - | False |
| Activates a debug info about the loaded values of I/O tags. Use this parameter only when communication must be debug because it highly uses CPU and slows down the communication. | YES/NO | NO |
Debug I/O Binary Packets Info | Activates a debug info about a binary content of packets. Use this parameter only when communication must be debug because it highly uses CPU and slows down the communication. | YES/NO | NO |
| Activates a basic debug info about requested data. | YES/NO | YES |
| Activates a basic debug info about received packets. | YES/NO | YES |
| Kotva |
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| komunikacna_stanica |
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| komunikacna_stanica |
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Communication station configuration
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