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2 Engineering

Ethernet Communication (ISO on TCP) between SIMATIC S5 and

SIMATIC S7-1500 Controllers

Entry-ID: 109482475, V1.2, 07/2019

2.10.2 Scenario 2a – Communication via parameterized OUC (single

instructions) and internal CPU interface

Prerequisite

Table 2-30

Loaded

S7-1500 station

Enable bit S7-1500 CPU

for scenario 2a

Activated enable bit

(S5-CPU)

PLC_Sz2_S-R_CPU_ID5_ID105

E 0.1

M 130.3

Activate the corresponding enable bit in the SIMATIC S5-CPU via the "BB1” watch

table.

As, in this case, the S7-1500 program contains the two example scenarios 2a and

2b, you can activate scenario 2a via the enable bit E 0.1.

Now, the connection will be established by the SIMATIC S7 station.

Test and diagnostics of communication in the SIMATIC S7-1500

The bidirectional data exchange (continuous count value) can be monitored via the

output byte (AB1) of the S7-1500.

To monitor the ongoing communication and the status of the send and receive

blocks in the SIMATIC S7-1500, call the watch table "BEO_Sz2_ID105” in TIA

Portal.

Please refer to the "online” help for error states or status displays of the OUC

blocks.

The status of the connection can also be checked in the S7-1500 station by means

of the online functions of TIA Portal.

1. In TIA Portal of the station, call the "Device configuration” of this scenario.

2. Go to the station in "online” mode via the "Go online” option in the menu bar.

3. In the "Network view” (1), select the station "PLC_Sz2_S-R_CPU_ID105” (2)

and go to the "Connections” tab (3).

4. In the "Connections” tab (3), select the parameterized ISO-on-TCP connection

with the local ID "105”.

5. In the "Diagnostics” tab, go to the "Connection information” (4).

Siemens CP1430 TCP User Manual

Questions and Answers: