Communication Between Instances - Siemens Simatic S7-1500 Function Manual
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Simulate CPU
5.6 Simulate communication
TMAIL_C
When the TMAIL_C instruction is used, the mail server may not be located on the same
computer as the PLCSIM Advanced instance.
Remedy
Make the mail server available via a different computer in the network.
5.6.2
Communication between instances
PLCSIM Advanced supports communication between instances. An instance may be a
simulation in PLCSIM Advanced V2.0 or a simulation in WinCC Runtime as of V14.
You can run two instances of PLCSIM Advanced, which then communicate with each other.
To enable instances to communicate with each other, they must have a unique IP address.
Each simulated CPU requires a unique IP address
If the CPUs have the same IP address, you cannot run multiple simulations. Each simulated
CPU requires a unique IP address.
Make sure that the IP addresses in STEP 7 are unique before you start your simulations.
T-block instructions and UDP
PLCSIM Advanced simulates T-block connections for which the UDP protocol is configured
only via the communication interface "PLCSIM Virtual Ethernet Adapter" (TCP/IP).
T-block instructions and data segmentation
PLCSIM Advanced implements T-block instructions with a data segmentation of 4 KB. A real
CPU has data segmentation of 8192 bytes.
If you send more than 4 KB in a single TSEND instruction and receive data in ad hoc mode
with a TRCV instruction, the TRCV instruction generates new data with only 4 KB. You must
perform the TRCV instruction several times to receive additional bytes.
70
S7-PLCSIM Advanced
Function Manual, 12/2017, A5E37039512-AB
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