Typical Sinec L1 Network - Siemens SIMATIC S5 Manual
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S5-115F Manual
Node
Master
Slave 1
Slave 2
Slave 3
Slave 4
Slave 5
At least the following must be entered in the SINEC L1 polling list according to the above
rules:
Slave 1, slave 2, slave 3 and slave 5
Slave 4 is not entered since it is neither the source slave of a data transfer nor the destination
slave of a data transfer from the master.
To spread the traffic load evenly over all data paths, slave names must be repeated when
networking the S5-115F with SINEC L1. The following polling list is obtained at for the
example if we observe the recommendation that the same slave numbers must not appear
next to each other:
Slave 1, slave 2, slave 3, slave 2, slave 5
Since there are five elements in the SINEC L1 polling list, you must enter a "6" in the "Number
of elements in the SINEC L1 polling list" line when setting the communications parameters.
Note
The SINEC L1 polling list is not defined in the case of point-to-point connections. In this
case, you must define the number of elements as you would when implementing the
connection with a CP 530.
•
Number of all data bytes transmitted
This number is used to calculate the SINEC L1 polling time.
Enter the sum of all message lengths including two header bytes transmitted within one
SINEC L1 polling cycle on the LAN. Please also take the data sent by the master into account.
•
SINEC L1 safety time
The SINEC L1 LAN safety time is used to monitor the SINEC L1 LAN response time. The response
time begins when FB 254 is called with the SINEC L1 processing parameter in the source
S5-115F and ends when the message is entered in the Receive mailbox of the destination
S5-115F ( Vol. 1, 10.3.5 of the Manual).
•
SINEC L1 polling time
The SINEC L1 polling time is calculated automatically. It must be less than the SINEC L1 safety
time.
You will find more notes on setting SINEC L1 LAN parameters in Chapter 7 of the S5-115F
Manual ( Vol. 1, 7.2 of the Manual).
EWA 4NEB 811 6149-02
Connections
Figure 1-7. Typical SINEC L1 Network
Configuring with COM 115F
1-15
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