Siemens SIMATIC S5-115F User Manual page 186

Communications Capabilities
Operator-process communication and visualization
For operator-process communication and visualization, a communication and visualization PLC
must be connected to the S5-115F via the SINEC L1 LAN. The connection is established to subunit B
so that the interface of subunit A is free for a programmer. In Figure 7-6 the communication and
visualization PLC is the SINEC L1 master with the CP 530 module and the S5-115F with its subunit B
is a SINEC L1 slave.
SIMATIC S5
Subunit A
SINEC L1 LAN
Figure 7-6. Operator-Process Communication and Visualization
Visualization tasks do not influence the program executing in the S5-115F.
Operator inputs from the programmer or PLC are only safety-related if they are subjected to a
safety test by a user filter program.
During this safety test you must check the validity of the data and transfer it to a data area to
which the user program has only read access. You must check the programmer input data in the
restart OBs (OB21/OB22).
7-10
S5 - 115F
DI DQ RB - DI
Operator-process
communication and
visualization
Subunit B
RB - DI DQ DI
DI
DQ
RB - DI =
S5-115F Manual
= Digital input
module
= Digital output
module
Readback digital
input module
EWA 4NEB 811 6148-02