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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

2.10.3 Scenario 2b – Communication via programmed OUC (single

instructions) and internal CPU interface

Prerequisite

Table 2-31

Loaded

S7-1500 station

Enable bit S7-1500 CPU

for scenario 2b

Activated enable bit

(S5-CPU)

PLC_Sz2_S-R_CPU_ID5_ID105

E 0.2

M 130.4

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, activate scenario 2b via the enable bit E 0.2.

Now, the connection will be established by the SIMATIC S5 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 (AB0) 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_ID5” 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 (see chapter 2.10.2).

Siemens CP1430 TCP User Manual

Questions and Answers: